Is this (S3 on GAE) something people want?
mcotton: Its an interesting idea.  I'm working with GAE but before I started I had to choose what platform I wanted to use.  It seems like if I needed S3 it would have been best to go 100% amazon.I don't want to discourage you at all.  Make a demo and let people see how it can be used.  Maybe I'm just unique and not the target user