Looks like voicestick.com is getting up to speed. They invented the cellular bridge along with all the other voip things you would expect.
They allow ONE free next to nothing account, more then one is $5 a month. You need a CC to ID yourself as this keeps the hogs from trying to get more then one free accout. They do not charge you CC anything.
Besides the free account you get a credit code in the Welcome Email, just put it in the account area and you get a $5 of out call credit in your account. All incoming calls are free.
DID's in UK and USA most local area codes.