(LOS ANGELES) -- Viewers of this week's Two and a Half Men episode may not have realized it at the time, but Ashton Kutcher managed to sneak in a plug for a few companies in which he's financially invested.
His character, an Internet billionaire, appeared in a scene in which he was using a laptop computer covered in stickers promoting Foursquare, Hipmunk, Flipboard, and GroupMe -- all companies in which Kutcher has a financial stake, according to Variety. A sticker touting Chegg, a textbook website whose social media is handled by Kutcher's production company, was also seen on the laptop.
CBS noted the Foursquare reference in the end credits, as required by the Federal Communications Commission. A spokesperson for the network told Variety the stickers were "not part of any advertising transaction with CBS."
Copyright 2011 ABC News Rqadio