Blogroll for tag search
Bloglines - A service for searching, subscribing, publishing and sharing news feeds, blogs, and rich Web content
Technorati - Another popular blog search engine, with support of tags
Feedster - A RSS feed search engine and aggregator
Meta Tracker - A fast and small desktop search program like Beagle/Google search
Pipl - Another on-line people search
Maltego - A data mining software to find information about domain, person, and etc from the Internet
CrunchBase - A who's who directory of technology companies, people, and investors.
Spock - Free people finder
Wink - A on-line person search
Peek You - Another on-line people search
Alltop - A by topic blog search engine, a “online magazine rack” of popular topics
My Bing experiment: Can it be the default search engine? (ZDNet)
