It all depends on what you like, really. With all the media outlets we have these days, confining your music selection to just what they pick to play on the radio is frankly closed-minded. Between YouTube, Facebook, Limewire, and Mediafire aspiring artists have SO many outlets I think it's safe to say the radio might be phased out before the end of our generation.
I've discovered many artists through the Internet, artists which I never would have found otherwise, given my small town's limited radio station selection. Nightwish, Arcade Fire, Duane and Brand0...heck, even the folk-ish music I love like Enter the Haggis, the Celtic Women and Loreena McKennitt. If not for YouTube exploration and talking with people on forums, those artists never would have crossed my radar.
And now one of my favorite pastimes has become scouring YouTube for my favorite artists, and then looking at the related videos for similar stuff by different people, and branching off from there. I rarely use the radio anymore, my iPod now dominates my car tunes. If ever I were to go back to the radio, I think it would only be in the form of satellite radio.
Oh also speaking of which, Internet radio through iTunes or otherwise is quite good as well. They list the artists as they play, and if I find one I like I'll write them down and look them up at a later date.