The only people that are going to use this new feature are people who already use LinkedIn a lot. In which case, they already know your IP addresses, since you'

The only people that are going to use this new feature are people who already use LinkedIn a lot. In which case, they already know your IP addresses, since you're likely using LinkedIn from work, home, and mobile anyway. So if they're mining IP addresses, I'm not sure that this is providing something new.