Old Street station has been Conversed. Here's Annie Mole:
The ads running up (and down) the escalator are pretty striking and I could see a number of young Shoreditchians...working out if they had the latest albums of the musicians displayed. [They] also greet you at the barriers, perhaps with the subliminal message that if you're wearing Converses, the gates will magically open before you, or at least it'll make it easier to leap over the barriers.
Why not plaster the entire Underground network with ads, Annie asks. After all, some Overground station signs have "home of large insurance company" messages stuck on them. And how's this for heresy?