Back in 2005 client Iotum went to Demo, captured a Demo god award for Pronto, a conference all and calendar mashup that brought intelligence to the conference calling arena.
Last year client ifByPhone rolled out what Professor Mashup Thomas Howe calls one of the easiest to use Voice API platforms around.
They even have the Alias calling that TalkPlus tried back in 2007.
Give me something new (and useful) please. There has to be more than conference calling and Facebook VoiceMail (as if we want another FB VM app)