Oh no, I can think very evil. I just don't see what kind of evil thinking would arrive at "Hey lets use this website to collect IP address/license plate pairs at a small scale"

That just doesn't strike me as a very efficient way of doing evil.

You can just go on accurint and find the oldest people living alone in the richest neighbourhoods near you. You can even fairly reliably find out whether or not they have living relatives.

All this deeply sensitive data is already readily available. I don't think IP+license plate data would be particularly interesting unless you're Google and able to gather that at an absolutely massive scale. But even then, you'd be using it for extremely boring kinds of evil.