Helio, that virtual carrier that doesn't call itself a phone company, has partnered with Obopay, a new mobile peer-to-peer payment system. With Obopay on your Helio device, you can get, send, and spend money directly from your cell phone via a prepaid account. You can also get an Obopay Prepaid MasterCard account that can be managed on your Helio phone. With Obopay in Helio's stable from the get-go, Helio is furthering its standing in the young-and-hip demographic. It'll be interesting to see how popular Obopay gets in such a niche market.