Major search engines provide listings from a variety of sources. Generally, 99% of search engine traffic comes from one of only 4-5 major sources! Each may get results from third-party search providers or through their own efforts. The table below shows where each search engine gets the main results it displays.

Knowing how to read your website logfiles plays an important role in determining how to adjust your strategies for search engines. Is the site being indexed? What search engines are coming regularly and re-indexing? How many hits am I receiving from specific search engines? What do the spiders see when they index my site? These are all very influential factors in how well your site will perform in the long run.

Search Engine Realtionship Chart: