We’ve had great feedback from early visitors and users regarding the site. We love that you all *get* it immediately – it seems as if you’ve been waiting for a service such as this.
It is also clear that there are 2 big feature requests – (1) support for large-memory computations, and (2) support for the R language.
Given that we are running our computations on Amazon machines, it is somewhat trivial to offer high memory / CPU instances (on 64 bit machines), though we’ll have to figure out the subscription / price implications of this. No worries – we’ll sort this out and add the functionality shortly – stay tuned!
As far as R support goes, honestly none of us have used it before, but that’s never stopped us 
. It will come in the near term as well provided we don’t hit any show stoppers with our overall architecture.
It is far more rewarding to build features users have explicitly requested than it is to labor away in secret while you build the v1 functionality you need for a launch. We love being launched, and we love all your enthusiasm for the company. Keep talking to us, and we’ll keep improving!