Full-text search through the pages. September 2008.

Now Exolog equipped with a far more powerful internal search engine. Until then, the search was carried out on the exact search phrase. As a result, issued a list of pages in random order.

Now the search is carried out in each of the query words. The result is sorted by relevance extradition, that is most similar pages on the search phrase placed above the others. Approximately the same type of work search engines Google and Yandex.

More details about the full-text search, you can read in Wikipedia