Google Wave-Surfs up?

I stopped what I was doing and watched this video about Google Wave. Not sure what to say, its just insanely good and as an open source project I reckon this will explode (then again I have been known to be seriously wrong).  At least among the internet based community.

But in terms of business, Im wondering how they will recieve it as just another tool to learn rather than understanding the advantages of the application.

Then again maybe we are giving Google to much, we see what happens when Gmail goes down, what would happen if Google wave went down…never mind all the other information they will have access to.