Linky-link. Full disclosure - Claria is a client of Underscore's (we handle their trade media on an ongoing basis and consulted for them a few years back.)
I did speak with Scott Eagle a few minutes ago, and he seems quite excited. However, there's an embargo so he hasn't told me anything I can really blog about. He did say things should become clearer next week, though.
Personally, I'm very excited and can't wait to learn more. Claria has some very exciting technology and I can't wait to help Scott and Claria market PersonalWeb and their company in general.