Yahoo's FUSE party (which, by the way, was up in Santa Clara in their Mission College office) was well-photographed, if confusing:

A Yahooer gave me an all-revealing IMterview:

Valleywag: so, on the record, what does this all mean?
Yahooer: I can't tell U :-(
but it is COOL (as is most of the stuff happening at Yahoo!)
seriously we rock.... and you can quote me on that

So all we know about FUSE so far is:
- Acoustic guitars
- Balloons
- No booze

Photos tagged Yahoo FUSE [Flickr]
Earlier: Yahoo FUSE: It's revolutioniz— It's a collabo— oh hell, it's a party [Valleywag]