It is certainly news to me if Microsoft has acquired Onfolio. In reading a news item about Microsoft preparing to roll out the BETA version of Windows Live Search, I discovered this paragraph at the end of the article. (Bold added.)
In another release slated for Wednesday, Microsoft said it was rolling out a new Windows Live toolbar that incorporates technology from Onfolio Inc., an Internet research and information management company it recently acquired.
Onfolio is my preferred RSS aggregator, so I'll be very interesting to find out what happens with this.
UPDATE: Well, it must be true. Scoble is saying so. Apparently Microsoft is incorporating some of Onfolio's technology into the new Windows Live Search toolbar.