Ribbit announced that it had been purchased by British Telecom on Tuesday for $105 million in cash. As deals go, that might not seem like a lot, but given the fact that it’s all cash and given the relatively slow market for “liquidity events” these days, it’s worth pondering. Peeling the onion and trying to get beyond the cash, this is an important milestone. For background, you should know that Ribbit is a software and services company that provides on-demand phone service through VoIP and a developer toolkit for integrating voice as a data type into all manner of applications.