Los Angeles-based online social question and answer site Sodahead.com said today that the firm has reached more than 1 million registered users at the site. Sodahead.com, which operates a web site where users can ask and answer questions, share opinions, and network with other users, said that it has now recorded more than 5 million votes and 8 million comments on the site. SodaHead is venture backed by Mohr, Davidow Ventures, Mission Ventures, the Tech Coast Angels, and angel investor Ron Conway, and has raised $12.7M in venture funding since its launch in September of 2007. Sodahead.com was co-founded by Jason Feffer, who was VP of Operations at MySpace.