Are there any entirely IM or VoIP -based p2p support services? That is services like Yedda, only that the communication happens in real time, on chat or via Skype?
I know of IRC software support rooms and http://qunu.com but I am looking for something more advanced, for instance a database where you can tag yor question (without writing it, tags alone), leave your IM details, take advantage of a tag-matching system like here on Yedda and wait to be contacted on your personal IM client.