Inbound links (from other sites to yours) are most valuable, depending on the sites they come from. Internal links between pages on your site are also important. The value of outbound links (from your site to another) is a hotly debated topic. A small number of related links to authoritative sites can sometimes help bots know what your subject is (especially AdSense).
Any keywords which are also links are possibly weighted higher that non-linked keywords.
-- This message may have been cut off and the rest will only be shown to members. To become a member, click here --