Atlanta's startup weekend company is apparently in the clear. Not sure what the difference is between the two.
In Atlanta's, the actual startup was an C-corp owned in part by Startup Weekend, LLC, in part by Atlanta Startup Weekend LLC, and the rest by the "core team" that existed after the weekend. People who participated in the weekend were given shares in Atlanta Startup Weekend, LLC, and not the C-corp. I think this was done to avoid any complications with the SEC, since LLCs are governed far less strictly.
In Atlanta's, the actual startup was an C-corp owned in part by Startup Weekend, LLC, in part by Atlanta Startup Weekend LLC, and the rest by the "core team" that existed after the weekend. People who participated in the weekend were given shares in Atlanta Startup Weekend, LLC, and not the C-corp. I think this was done to avoid any complications with the SEC, since LLCs are governed far less strictly.