[winkle]

The part about calling you up when it was clear you wanted to give them your info was what really concerned me. It's an easy way to scare your customers away.

As he said, the creep factor was high. If you were to do something like that it should be clear that your information is being captured or give you the ability to opt out right next to your phone number. That would still be a LinkedIn like deceitful UX experience but slightly better.