I haven't been listening much in the past few weeks, but when I check my most played on my iPod (which I got in the summer of last year, so about a years worth of listening) my most played song is Seventh Wonder - Move On Through. And one of the top played songs is Seventh Wonder - The Great Escape, with 115 last time I checked. So that's 58 hours listening to that song alone since last December, not including occasions where I've listened to it not on my iPod (not that often since I generally listen on iPod speakers or on headphones), listened part of the way through and been interrupted, or got to the end and selected a new song before it reaches the very end of the track.
That's probably the best indication.