This would be more valuable if the site also compiled as much aggregate information about what makes and models of IP-connected camera were most common. This would at least shame the manufacturers into designing products that help people set these up these cameras securely.
It seems like it would be pretty easy to filter by amount of motion and list in priority order. (Provided the motion lasts long enough to overcome latency effects, etc).
I wonder if "Hacktivist's Advocate" defense-attorney Jay Leiderman would agree this is "a stunningly clear violation of the Computer Fraud and Abuse Act (CFAA)", as he is quoted in this article, if he were defending someone accused of the practice.
I think like most attorneys he would stand behind the law and he would also stand behind his client. In this case it would mean forcing the prosecution to prove that his client actually did this illegal thing as well as making the judge and jury aware of all mitigating circumstances.
That being said, it's quite common for attorneys to refuse cases they don't feel they can try to the best of their ability in good conscience.