Google opened up invites to 100,000 new users to its upcoming Wave service late yesterday. Unfortunately, I was not one of them, even though I signed up just after their keynote demo. 
In any case, you can check out some impressions of the service. A popular “negative” review that has been making its way around the web calls Wave overhyped and states:
This is far far worse than email… It’s far far worse than Twitter… Google’s Wave will crash hard onto the beach of overhype.
I think he’s just trying to rile people up, but it’s good to get the story from all sides. Regardless, it’s something I can see myself using. And I would be using it if only I got an invite!
If you happen to have an invite, please send it my way. 