Google is going to allow anyone to run applications in their infrastructure, meaning using their super scalable database system and other server infrastructure. I just signed up to try it out, but was too late (they allow in 10,000 people only, apparently that many signed up already). You can find more information here. The cool thing is that the only way to build applications on it for now is by using Python, which will give Python a huge boost in popularity for web development I think.
Update: Just got an email from Google saying my account was enabled, guess I wasn’t too late then :)