Yea, I was skeptical before, but having seen that ad I can say those things are probably worthless. First thing that jumped out at me: the quote on the main page. "With a 110Db motion sensitive alarm for bikes . . . one things for sure -- it's really loud!" WTF? of course it's loud, it's 110 freaking Dbs! That's like saying, "That speedcar sure does go fast!" Besides, it only sounds for 15 seconds before shutting down. If anything, I'd bet this thing would attrack theft/vandalism before it would deter it.

I don't think there's any more a person can do to reasonably keep their bike safe. They are small enough to haul off in cars or trucks, so the only real safety feature you have is the area you put it in, and the strength of the lock you use (asuming you lock it to something that won't budge). Lock your wheel to the frame, and add a 110Db alarm if it makes you feel better, but it'll all be for naught if a theif simply comes by, cracks your U-lock and tosses it into the back of their van. They can work on those other locks at thier leisure, once they have the bike in their possession.