Congratulations to AppJet and etherpad.com team!
EtherPad was a great product and it is nice to see the team being rewarded for their hard work. I wish they published more information on their AppJet engine, but it doesn't seem that it will ever happen.
What is interesting is that right after they announced the acquisition they immediately stopped accepting new customers and creating new free pads. It basically means that Google is not particularly interested in their customers or their user base. All they wanted was the team.
Or, maybe, they wanted to get a competitor product out of the market to clear up the way for Google Wave. But, nah, I mean, Google is not Evil and wouldn't throw money to shut down the competition, am I right? :)