Yesterday (9/30/2009), Google released a new product, Google Wave, to 100,000 testers. Basically, this is Google's way of trying to bring together word processing, instant messaging, social networking, blogs, and directions. For example, in a video, they allow you to have a conversation with someone through chat, and have it autopublish to a Web site. (I can see this being extremely useful in technical support, for example - you could have chats published, and then when people search for that problem, it shows up.
It is a technologically interesting tool, but I am not 100% sure of whether this is really going to take off. Time will tell, as will the 100,000 beta testers (not counting the ones who sold their invite on eBay!)
Google Video on Wave