Good riddance to Google Wave.
I never understood what the fuss was about.
Wave may have been clever programming, but it didn’t do anything other applications already did better. Google has better tools for most Wave tasks.
It did instant messaging although Google already had tools that do the same job.
Wave did communications. Why bother when Gmail is so much better?
Wave was a collaboration tool. Who needs that when collaborating on Google Docs is so easy?
Wave had a bad user interface and was difficult to use.
More importantly, it was difficult to understand what was going on and what one was supposed to do.
That said, Google Wave had some success.