I've had an account with them for a while, and I met them at SXSW. I'm not sure what they're publicly saying or not, but they've got some really cool stuff in the works with that feature...
They're a company that I'm excited about, because I've found them useful a ton of times since I've heard of the idea. One of those "you never knew how useful it was until you had it" kind of things.
Hadn't heard of Venmo before this. But yeah, that sounds like it could be pretty disruptive.