Likewise, what do you think these people will find in a terrorists residence?
I think people have the notion that the cable guy will stroll in and see an amateur SAM site in their living room or something.
Plus, the whole thing is pretty subjective. If I do the credit card processing and arbitrarily decide that you buy too much gunpowder, do you deserve to have your door kicked in as a result of this?
The potential for abuse is huge and as it is now anyone with a complaint or a concern can call the police and take their whacks if it turns out to be a false report.
Plus, there is some concern about them databasing this information and profiling people based on pure speculation. If your house get's raided on one of these "tips" then do you know who squealed on you? Will your database entry be deleted or cleared? Or will it have a "well, we didn't get him this time" notation tossed in there somewhere? Will the mail carrier get mad and narc on you because you didn't give him a christmas gift? Or because you cut him off in traffic?
If I do the credit card processing, I can turn you in for gunpowder purchases NOW.
The hysteria on this site over what amounts to a Neighborhood Watch program is, well, hysterical.