Search 2 technologies

A really interesting article on the evolving world of search and so called searcg 2 technologies often described as next steps for google and yahoo !!

Its so called third genration search techonlogies Richard MC Manus definition is really neat ;

• First-generation search ranked sites based on page content - examples are early
  yahoo.com and Alta Vista.
• Second-generation relies on link analysis for ranking - so they take the structure of
  the Web into account. Examples are Google and Overture.
• Third-generation search technologies are designed to combine the scalability of
  existing internet search engines with new and improved relevancy models; they bring into
  the equation user preferences, collaboration, collective intelligence, a rich user
  experience, and many other specialized capabilities that make information more productive.

Examples: Swicki, Rollyo, Clusty, Wink, Lexxe

article link here