Interesting question... I wish... and if I had the money, resources and time, trust me I would start one... I DO often go to PalTalk -- live chat community with some very interesting Pagan folks... in fact i have been known to give a LOAD of tarot readigns there. They have live video and chat.
Now, here is a message board, although I am not sure how good it is... although i do go to the website from tiem to time for thier freebie tarot readings (tho i think electronic tarot is a bit silly) http://www.paganportal.com/paganportal/message-board.asp
Kisses,
Moe