There are a number of key differences between link farms and web directories. The most prominent difference between the two is that web directories are valued by the search engines, while link farms are considered to be spammy. Link farms are generally built by webmasters who wish to cheat the search engines.



But it is recommended the ratio between two should be kept equal, so it does not look like you are fabricating all your links. Weight age from each link is also different and depends upon several factors, but we will not be talking about it here.



So the thing here is when you ask someone to link to you, check their credentials. If the majority of sites linking to you link to questionable sites, you will not get credit for those links. In fact you may even get penalized. You are known for the company you keep.



The quality of the incoming link is also critical. A search engine will put more emphasis on a high quality web page (ranked high by a particular search engine) than on a low quality web page (ranked low by a particular search engine). It will take many lower quality incoming links to approach the level of a single high quality incoming link.



Next is the External Links, these links directs you to pages in other websites. Having too many external links in your site can be a disadvantage because it may be branded as a link farm. "Link farm" sites, your blog for example, is not very reliable. As a result, the site may have a low page rank (PR).



Submitting websites to directories or subsites to directories is what business owners and webmasters want. More often that not, as soon as a client submits a project to an SEO expert, websites and competitors need to be checked out then a subsequent search for back links and obtaining a ranking ensues.



Therefore, you should completely avoid deriving any of your backlinks from link farms or such other illegal sources (bad neighborhoods), because this will place your website under the risk of getting banned or excluded from the various search engines.



Back Links can also be harmful be careful where you get them from they are assessed by the source providing the back link if the link comes from a link farm, a website absent of content or a site with a considerably low page rank, the back link can prove to have no influence on search engine page rank.

Not all back links are worth your time.



You should send the link to them as HTML code and never send your link as an image unless they will also include a text description with it. Not every Web master you contact will agree to link to your site and you may have to approach many Web masters before you see any significant results.





Read about link building also read article submission service also read web 2 services



Read about search engine seo also read keyword rank

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