I'm not sure it's fair to say that every bike sold on Craigslist is stolen, which is pretty much what their "stolen bike finder" tool suggests.<p>To then offer a classifieds tool seems a bit off... especially since there's nothing to say that stolen bikes are not being sold their either other than their word. But then, Craigslist would surely say that they don't support selling stolen goods either.<p>Mostly, as someone who runs one of the largest bike forums in the world, I'm unimpressed.<p>But as I don't like commenting negatively without at least thinking how I'd possibly do it better.<p>Provenance.<p>I would love to see something like <a href="http://velospace.org/node" rel="nofollow">http://velospace.org/node</a> that provides profiles of bikes, but with the capability of registering the components too.<p>Such that it becomes a database of bikes over time, you'd see what bits you changed when, etc.<p>If your bike gets stolen then you have a record that it was yours, and you mark it as stolen and it auto-alerts the police as well as auto-searching classifieds sites. And you'd have a record of anything you changed that helps identify it.<p>If you sell your bike, you assign the bike to the new owner, and the bike now shows who currently owns it as well as who used to own it... the bike gets provenance. A nice history of what it looked like when, and how owns it now.<p>With a bicycle provenance database you combine the best of buying a bike, owning a bike and selling a bike... whilst at the same time making it very easy for people to find the bike online if it gets stolen, and very easy to find it if it gets sold online. You have the ability to prove it was yours.<p>So what I'd like to see are sites like velospace expand into managing the provenance of bikes and for that to be used as a major deterrent to bike theft.