Instead of focusing on real, meaning-based relevancy, they supplement their keyword-based algorithms by counting the number of links that lead to a page and factoring the page's popularity into its placement in search results.
It has spent probably four times as much as its nearest competitors and has got twice as many page-views (the meter of web popularity) as its nearest British rival.
People end up on Netscape's site because it is the default home page for Netscape's browser, which still edges out Microsoft's offering, Internet Explorer, in popularity.