Here are some tips for Search Engine Optimization:
For a moment let us put ourselves into the shoes of search engines owners and creators. A few years ago, a directory submitting to thousands of other sites needed you to put in a lot of work, time and determination. After the software and online scripts, which automatically submit pages to directories, appeared, gaining hundreds or thousands of links in a short period of time is not a problem any more. At the same time, the number of websites is growing by leaps and bounds every day and it increases competition for particular keywords. The search engines have to find sites which best suit to the search phrase from millions of sites.
In light of all of these factors, the people who design and keep re-inventing the search engines have been forced to use special filters. In their opinion, on the one hand, the inflow of the large number of useless links from sites submitted to the thousands of directories is limited, and the focus is only on these which prove the real quality of the page. On the other hand, only these sites, which best suit the topic of the search, are fund. Therefore, nowadays it is better to have our one or two links on quality sites than one hundred in useless directories. At the same time, much attention should be paid to the search engine optimization of keywords, which still remains to be the primary factor for determining the theme of the site.