Oliver Rist at InfoWorld - Used properly, RSS boosts collaboration:

"Microsoft's SharePoint push has made team-style collaboration a hot buzzword in Windows IT shops -- mainly because Redmond's made it so easy. Grab a template, add some team-specific content, spend a little time handling permissions and you can have a fairly sophisticated internal collaboration site up and running in hours rather than weeks. You can even open it up to specific users outside the firewall.

That's powerful stuff no matter how you slice it and certainly a competitor or collaborator to the Wiki wave flowing over the rest of the Web. But while RSS certainly fits into this mold, collaboration really isn't where we're looking to use RSS. Frankly, I'm all collaborated out."