[Paul K]

BBC

Google's desktop search software is being overhauled to become a digital helper that reacts to what users do.
The move is likely to intensify competition between Google and rivals Microsoft, Yahoo and AOL.
The revamped software will suggest web links, personal documents and images that might be relevant to whatever someone is doing with their computer.
The tool also automatically subscribes to feeds from weblogs and news sites that a user visits.

Looks interesting
http://desktop.google.com/