That is really a bad move. Google buys Etherpad just to close it down. I would argue that Etherpad is the best online tool I came across during the last 2 years. Why do they do that to me?
Now what are the alternatives:
- http://collabedit.com – At least one generation behind but usable.
- Google Docs – Oh…. not today.
- Co-Ment – better for commenting but a usable collaboration tool.