The Term Extraction service provides a list of significant words or phrases extracted from a larger content. It is one of the technologies used in Y!Q.

Google Blogoscoped created a free auto linker tool, which makes adding on topic outbound links exceptionally easy. Am betting some people creating fake blogs probably enjoy the offering.

Part of Google's strong brand is PageRank, which now is of little use AND rarely updated. With all of these other good ideas Yahoo! Search is coming out with I am a bit surprised they are not providing and heavily promoting a regularly updated connectivity measurement service. Whatever happened to WebRank?