Try getting in touch with these guys:
http://www.stemlegal.com/
Most of them, especially Steve Matthews and Jordan Furlong, are well known legal personalities in the social media world. Neither of them are actually practicing lawyers as far as I know.
Another interesting fellow to speak to is Edward Prutschi. He's a big twitter guy and his firm seems to be doing a lot of social media networking stuff as well. He is a practicing lawyer in the Toronto area (I think).