It's not illegal, you just have to announce that it's sponsored (and Wikipedia mentions that it doesn't count as a regular play, but I can't find a citation for

It's not illegal, you just have to announce that it's sponsored (and Wikipedia mentions that it doesn't count as a regular play, but I can't find a citation for that at the moment): http://www.law.cornell.edu/uscode/text/47/317 http://www.law.cornell.edu/uscode/text/47/317