Google has abandoned Google Wave a while ago, but now has reused a piece of that technology in a new project called “Google Shared Spaces” (GSS). GSS provides gadgets for live collaboration. Examples include collaboratively editing a table, figuring out a date for a meeting, and games.
Google Wave tried to be everything at the same time and was confusing as a result. Turning it into specialized services might be the proper way to put this technology to real-world use.