Take Twitter, add its concepts as a platform to banking and you get BankSimple, the unlaunched startup that you will definitely want to keep your eye on. BankSimple is a new take on online banking created by Twitter's former API guy, Alex Payne. BankSimple is aiming to create a banking platform, much as Twitter became a messaging platform.
Stock trading systems community Collective2 is bringing automated trading systems to the retail brokerage customer. Joe Shmoe can now have access to a trading system developed and practiced by an experienced broker, mad technical analyst, or possibly even a computer algorithm. The Collective2 API will make it possible for quant systems all over the internet to trigger trading in unknown numbers of retail customer accounts. Dangerous? Frightening? Futuristic? Yes, Indeed.