Yeah, we do have something like that (it came up in one of my "who the heck is this calling me?" Googlings) - and I've registered with it now, so... *touches wood*

What makes me all "uh... what?" is the fact they have my name associated with the number, but I'm ex-directory, so even if they're whacking in a random number they shouldn't know WHO they're calling. ¬_¬