FreeConferenceCall and others like it may become a relic of the past, it seems. AT&T is now blocking access to FreeConference's 712 area code numbers, claiming that terminating a call on a bridge is not call termination.
Utterly bogus. If the call was being made on an INWATS or a 900 line, they would be Johnny-on-the-spot to claim a share of that termination revenue. You can't suck and blow at the same time, Ed.
The real impact, however, is going to be to drive users of these services to free or low cost VoIP-based services instead. Expect more conference calls on Skype, Jajah, and others as a result.