I've seen it fragment and specialize. And I'm okay with that. For instance with musicians - particularly guitarists (only because we tend to be gear enthusias

I've seen it fragment and specialize. And I'm okay with that. For instance with musicians - particularly guitarists (only because we tend to be gear enthusiasts) - Reverb.com has become our new Ebay.com. It's even replacing Craigslist for a lot of what we were doing previously (allows local deals, too). They essentially took all the good things that were working for Ebay and tailored it to musicians. It's a slam dunk.