Search Engine Optimalization
Functioning
Search Engine Optimalization constantly search the Internet by following links on already indexed pages and visit pending manual pages. The new pages are crawled, stored and added to your index. Existing pages are visited at regular intervals in order to register possible changes.
The indexing and evaluation is done automatically to search engines. They therefore differ from directories, in which a review of the content held by editors. In addition to search engines are all found various websites included in directories usually last only a weblink to the home page. Search engines evaluate the sites using ranking algorithms for directories in place during the rule but no weight placement in a suitable category. Search engines use as factors to evaluate on-page factors (such as title, headings, description, format text or ALT-text) and off-page factors (such as incoming anchor text and PageRank). For directories to create the editors (perhaps based on a submitted proposal) the page description. The factors and weightings used in the algorithms of search engines are very different, so that the results differ.
Currently there are only a few search engines provide, the independent results. Most get their results from Google or Yahoo:
Results Search Engine / Portal
Google AOL, Netscape, T-Online
Abacho Yahoo, Alltheweb, Altavista, Excite, Fireball, Infoseek (Go), Lycos, Overture, Web.de
Ask Jeeves Teoma
Google, Yahoo and MSN each have also toolbars that provide a direct way of searching.
The most important information about the (currently) the most important search engines and meta search engines are combined. You also get tips for successful research on the Internet.