Initially, I was irked when I had to listen to a commercial before a radio station's stream would start. I thought, "A thirty-second ad? By the time the stream kicks in, the song they're playing might be over..."
I thought a little more. "...And then, even if the song has ended," I reasoned, "I can still check the station's playlist to see what I missed. There will also be a good chance I can hear the song on YouTube and buy it on iTunes if I like it enough. Earlier in my life, none of this was possible."
Thirty seconds of advertising isn't too much to ask, after all.