If a few years ago search engines count the amount now can not say the same, now quality is first  All you had to do in the past to be indexed as well, was to gather as many links to your site, no matter the quality, counting only the number. The more, the better, was the slogan for online marketers. In time, significantly increasing the number of sites, search engines had to sort all these sites according to some criteria very well determined by an algorithm. Search engine results is now more relevant for users experience.

Google and other search engines, have implemented several new features to sort sites indexed in their algorithm. In now days, optimizing off-page pages  is about relevance quality content, made with the head,  Thus, the quality of links was implemented in the last Google Panda update algorithm.

Factors influencing quality of backlinks

Source’s Backlink – site from coming
If some years ago did not matter where he was shown the relevance of site link site compared to what it was like receiving, remember that now matters, and even a lot. If web directories, you will never find something relevant to your site as long as a web directory is populated with millions of links, which more or less strange to the affiliate links to websites sites that promote spam, you will not be as relevance.

Furthermore, Web directories are no relevant content that would create an authority on the search engines. Most times, in a directory accepted all sorts of sites, relevant and not simply because the industry to attract as many sites offer something beneficial whether or not those who and register website.

Hits the links listed in the directory
The best measure taken by Google in the last update algorithm is calculating the number of hits a link. The number of hits increases, the link is better and gets more Trust / Authority to Rank the parent site, and even PageRank should not forget either him. Now, imagine a web directory. How many people fall into a directory to search other sites and access them?

Most people, entering a web directory just to enroll their site because it’s supposedly trendy and good, and this is the last time walking on it. So, you realize that accessing links from a directory is extremely small if not zero. So, the benefits from them are ZERO = Useless.

PageRank and Outbound Links
90% of Web directories do not exceed PageRank 3 or 4. Do you know why? Disproportion between the number of links coming to your site (inbound) than leaving this site (Outbound). Now, to think logically again. How many links leaving a web directory?

Links crawlers read and accessed from a web directory
First, as you probably know, Google’s crawlers can access up to 100 links on a page in a single session. All that more than 100 remain inaccessible until you visit crawler, where here, it is possible to overcome them again, but we talked about it. Read the number of links per page. So, think about how many thousands of links on a page is a web directory can be indexed and analyzed by the percentage in a session started by Google crawlers.

Reputation of a web directory
I do not think we need to say that 95% of web directories are populated by spammers, maybe some even excluded from the search engine results can aţii the Sandbox for a fast growing so suspicious. I would not like to be compared with them.

LinkJuice the links provided by a web directory
For a site to provide the most essential SEO for Google (PageRank, Trust and Authority), the number of links OPTIMIZED a page should not jump 10. You may wonder why 10 and not 5 or 100. This is not a fixed value, but according to Google engineers, number of links optimized to take advantage of all the issues raised should not exceed 10% of the total number of links on a page.