You can access S3 using this: http://code.google.com/p/js3db/
MongoHQ has a REST API, so calling it from Javascript should be easy. This document might help you: http://blog.mongohq.com/blog/2012/02/20/connecting-to-mongoh...
thinks of all sorts of 100% client side websites to make
I will be experimenting with this later today.
If the correct services exist, there are so many things that could be done better.
thinks of all sorts of 100% client side websites to make