Google interprets a link from page A to page B as a vote, by page A, for page B. But, Google looks at more than the sheer volume of votes, or links a page receives; it also analyzes the page that casts the vote. Important, high-quality sites receive a higher Page Rank - so if yahoo.com links to your website, you'll get hefty votes! Higher Google Page Rank means higher search position for a particular keyword. Find your Page Rank... and your competitor's Page Rank!