I'm not the guy to get all starry-eyed about the Next Great Social Music App but I'll usually give them a spin just to see what's up. After all, Audioscrobbler cum Last.fm wasn't much more than a nice idea until it reached critical mass and now I'm paying (PayPal-ing to be exact) to support my addiction. So when my friend Anthony invited me to join iLike, I did so without expecting much more than a download I'd later have to purge to make room on my hard drive (for more MP3s, of course). Along the way I got sidetracked by the iLike Challenge, a timed Name That Tune game similar to the one bundled on iPods that entices you with progressive levels of mastery. I was able to reach Music Explorer while downloading, then I had to go to a meeting. When I next opened iTunes, iLike's fancy little sidebar slid out to the right showing me what Anthony (who lives about 500 miles away in Brooklyn) was currently listening to...nice, I'm into musical voyeurism (or is it eavesdropping if there's play button?). So I, like, like iLike, but I can't help but wonder why someone more XML-savvy than me doesn't just build a similar sidebar based on Last.fm data and save us all the hassle? Holla if you know of one. Or join iLike so my sidebar doesn't look so empty.