While it may seem like a small market to corner, iTunes users are seen by many ad firms as one of the most desirable segments as they tend to be young, educated and flush with disposable income.
Why thank you! *blush* Oh wait a minute, that means they're going to market to me. I guess I'll just avoid those pesky commercials by getting my TV from the iTMS.
[also at the BBC NEWS thanks iFelix!]