How about supporting use of BitFunder for collateral?
This would be great. But apparently they don't have an API. Will message them. Perhaps you should request also.
Quote
Q: Do you have an API for account info or trading?
A: Yes, we are just doing final testing and comprehensive documentation on it.
We will announce as soon as it is ready.
A: Yes, we are just doing final testing and comprehensive documentation on it.
We will announce as soon as it is ready.