> Sure. These things are about getting new and interesting companies to build on Google's infrastructure. Then when the time comes to acquire them and monetize them through advertising, all the integration is already done.
That seems to be a strained explanation, particularly in the case of paid Google Apps.
> Interestingly I signed up for the trial of Google App Engine. The only thing they wanted to approve me was for me to enter my GMail password. In other words, they'd already scanned my email and decided if I was a good candidate. Worrying, no?
The trial period for App Engine was, I think, limited for the purpose of controlling rate of growth on the platform until it was ready to be thrown wide open. I don't think there was evaluation involved at all, which is why they didn't need anything other than your login information.
When Google has rolled out products with limited previews with evaluation criteria, they've had applicants provide explanations of their intended use and other information.