39:
136:
291:, where a user creates an account and is then able to use their own blog. The created blog forms part of a network because it uses either a subdomain or a subfolder of the main domain, although in all other ways it can be entirely autonomous. This is also known as a hosted blog platform and usually uses the free WordPress Multisite software.
189:
Search engines require ways to confirm page relevancy. A known method is to examine for one-way links coming directly from relevant websites. The process of building links should not be confused with being listed on link farms, as the latter requires reciprocal return links, which often renders the
235:
Alternative link farm products emerged, particularly link-finding software that identified potential reciprocal link partners, sent them template-based emails offering to exchange links, and created directory-like link pages for
Websites, in the hope of building their link popularity and PageRank.
231:
However, the link farms became susceptible to manipulation by unscrupulous webmasters who joined the services, received inbound linkage, and then found ways to hide their outbound links or to avoid posting any links on their sites at all. Link farm managers had to implement quality controls and
283:
which focuses on thin content and on-page quality. PBNs have a history of being targeted by Google and therefore may not be the safest option. Since Google is on the search for blog networks, they are not always linked together. In fact, interlinking your blogs could help Google, and a single
267:
that are owned by the same entity. A blog network can either be a group of loosely connected blogs, or a group of blogs that are owned by the same company. The purpose of such a network is usually to promote other sites outside the network and therefore increase the search engine rankings or
206:
search engine's dependence upon link popularity. Although link popularity is used by some search engines to help establish a ranking order for search results, the
Inktomi engine at the time maintained two indexes. Search results were produced from the primary index, which was limited to
214:, then the most popular search service, also used Inktomi results to supplement its directory search feature. The link farms helped stabilize listings, primarily for online business Websites that had few natural links from larger, more stable sites in the Inktomi index.
228:. Rather than simply count all inbound links equally, the PageRank algorithm determines that some links may be more valuable than others, and therefore assigns them more weight than others. Link farming was adapted to help increase the PageRank of member pages.
217:
Link farm exchanges were at first handled on an informal basis, but several service companies were founded to provide automated registration, categorization, and link page updates to member
Websites.
186:). Other link exchange systems are designed to allow individual websites to selectively exchange links with other relevant websites, and are not considered a form of spamdexing.
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1145:
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and search results. In some cases, entire domains were removed from the search engine indexes in order to prevent them from influencing search results.
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Search engines countered the link farm movement by identifying specific attributes associated with link farm pages and filtering those pages from
224:
search engine became popular, search engine optimizers learned that Google's ranking algorithm depended in part on a link-weighting scheme called
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overall backlink advantage useless. This is due to oscillation, causing confusion over which is the vendor site and which is the promoting site.
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Inktomi was targeted for manipulation through link farms because it was then used by several independent but popular search engines.
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139:
A diagram of a link farm. Each circle represents a website, and each arrow represents a pair of hyperlinks between two websites.
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In
September 2014, Google targeted private blog networks (PBNs) with manual action ranking penalties. This served to dissuade
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and online marketers from using PBNs to increase their online rankings. The "thin content" warnings are closely tied to
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approximately 100 million listings. Pages with few inbound links fell out of the
Inktomi index on a monthly basis.
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networks, since they became more popular with the rise of the second phase of web development.
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469:"Google Targets Sites Using Private Blog Networks With Manual Action Ranking Penalties"
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exposed blog could reveal the whole blog network by looking at the outbound links.
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170:. Although some link farms can be created by hand, most are created through
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The
Complete Idiot's Guide to Growing Your Business with Google
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monitor member compliance with their rules to ensure fairness.
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A blog network may also refer to a central website, such as
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to other sites in the group for the purpose of increasing
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63:. Unsourced material may be challenged and removed.
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166:. In graph theoretic terms, a link farm is a
8:
236:These link farms are sometimes considered a
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872:
864:
532:
511:
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489:
19:For the historical site in Tennessee, see
123:Learn how and when to remove this message
16:Group of websites that link to each other
202:(SEOs) in 1999 to take advantage of the
134:
376:
294:Hosted blog networks are also known as
174:and services. A link farm is a form of
7:
1146:Black hat search engine optimization
387:. www.webopedia.com. 16 January 2002
61:adding citations to reliable sources
26:For the Knowledge (XXG) policy, see
268:advertising revenue generated from
198:Link farms were first developed by
21:Link Farm State Archaeological Area
698:Distributed Checksum Clearinghouse
14:
683:Challenge–response spam filtering
520:Unsolicited digital communication
37:
272:on the sites the PBN links to.
48:needs additional citations for
1:
359:Strongly connected component
1162:
1141:Search engine optimization
976:Online identity management
895:Search engine optimization
718:Naive Bayes spam filtering
334:Methods of website linking
277:search engine optimization
25:
18:
971:Social media optimization
909:Robots exclusion standard
28:Knowledge (XXG):Link farm
693:Disposable email address
555:Directory harvest attack
200:search engine optimizers
966:Search engine marketing
140:
445:John Wiley & Sons
437:Levene, Mark (2011).
406:Taylor, Dave (2005).
138:
703:Email authentication
257:private blog network
57:improve this article
1105:Human search engine
945:Display advertising
902:Exclusion standards
550:Bulk email software
1000:Search engine spam
935:Online advertising
270:online advertising
182:(sometimes called
172:automated programs
141:
1123:
1122:
861:
860:
688:Context filtering
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663:
180:web search engine
133:
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125:
107:
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959:Search marketing
928:Marketing topics
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829:Advance-fee scam
776:Keyword stuffing
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329:Keyword stuffing
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151:is any group of
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940:Email marketing
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841:Make Money Fast
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811:URL redirection
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545:Address munging
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447:. p. 125.
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416:. p. 264.
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1084:Barry Schwartz
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981:Paid inclusion
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821:Internet fraud
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771:Google bombing
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713:List poisoning
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570:Email spoofing
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385:"link farming"
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145:World Wide Web
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1053:Link exchange
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1048:Link building
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1027:Link building
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986:Pay per click
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950:Web analytics
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651:Telemarketing
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585:Pink contract
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454:9781118060346
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423:9781440696558
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354:Spam in blogs
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324:Doorway pages
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74: –
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69:
68:Find sources:
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58:
52:
51:
46:This article
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40:
35:
34:
29:
22:
1115:Content farm
1100:Geotargeting
1021:
1017:Scraper site
1012:Web scraping
914:Meta element
834:Lottery scam
791:Scraper site
780:
761:Doorway page
631:Mobile phone
611:Cold calling
485:
473:. Retrieved
471:. 2014-09-23
463:
439:
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408:
401:
389:. Retrieved
379:
339:Scraper site
319:Content farm
293:
286:
274:
260:
256:
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251:Blog network
242:
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230:
219:
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209:
197:
188:
148:
142:
119:
110:
100:
93:
86:
79:
67:
55:Please help
50:verification
47:
991:Google bomb
796:Social spam
708:Greylisting
678:Client-side
606:Auto dialer
344:Server farm
72:"Link farm"
1130:Categories
1110:Stop words
1079:Matt Cutts
1007:Spamdexing
801:Spam blogs
766:Forum spam
743:Spamdexing
616:Flyposting
575:Image spam
537:Email spam
475:2015-12-14
371:References
309:Click farm
240:strategy.
238:spamdexing
184:spamdexing
83:newspapers
1022:Link farm
781:Link farm
751:Blog spam
670:Anti-spam
636:Newsgroup
626:Messaging
528:Protocols
364:Web guide
349:Spam blog
289:WordPress
220:When the
157:hyperlink
155:that all
149:link farm
113:June 2013
1136:Spamming
1043:Backlink
919:nofollow
846:Phishing
756:Cloaking
733:Spamhaus
641:Robocall
621:Junk fax
314:Cloaking
302:See also
245:indexing
226:PageRank
176:spamming
164:rankings
153:websites
1036:Linking
728:SpamCop
646:Spambot
590:Spambot
580:Joe job
414:Penguin
391:16 June
296:Web 2.0
204:Inktomi
194:History
143:On the
97:scholar
1067:People
451:
420:
222:Google
212:Yahoo!
168:clique
99:
92:
85:
78:
70:
1093:Other
851:Voice
806:Sping
723:SORBS
599:Other
565:DNSWL
560:DNSBL
281:Panda
265:blogs
104:JSTOR
90:books
656:VoIP
449:ISBN
418:ISBN
393:2013
147:, a
76:news
261:PBN
161:SEO
59:by
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255:A
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457:.
426:.
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259:(
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120:(
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111:(
101:·
94:·
87:·
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30:.
23:.
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