I'm I free user and I totally get ads. The one thing that I don't get is after 4 or 5 songs it plays the same 2 or 3 ads. Ads are quite a bit more palatable when there is a little variety and diversity.
I'm listening to a Home Depot add right now, then an ad comes on talking about how hot it is.
I've heard the same two ads probably times in the past few hours.