Luis made me aware of a new site from IBM alphaworks – the Lotus Greenhouse. Although it is very much still in the making, it already lists several of the cool new collaborative technologies that we have been playing with internally – including dogear, our social bookmarking and tagging system. There's likely to be some more about Sametime 7.5 at some stage, too.
Update: the site is currently not fully open. Expect to see some changes while they get it up-and-running. As I type this, I can't actually log in to the site at all. I'm sure all this will change soon.