Two and a Half Men & Foursquare

Whilst I was watching Two and a Half Men last night I noticed Ashton's laptop case covered in stickers. The foursquare logo really stood out, perhaps because I'm a daily foursquare user. Foursquare mentioned this fact on Instagram making me wonder whether it was simple a coincidence or planned. Ashton is a foursquare user...
For such a highly hyped television show recently it makes sense to have a subtle bit of advertising with such a large audience watching.
What do you think? Planned or coincidence?

EDIT: It turns out that Ashton actually has a personal financial stake in each of these digital companies. CBS wasn't too happy about him using these stickers as essentially a free promotional platform. However, it doesn't really compare to the behaviour of Charlie Sheen on set.