[aboringusername]

Seriously, the fact it's become this easy to collect data leads me to wonder if I should just start an app called "give me your contacts list.com". You give me your data, you get nothing in return, thanks very much.

Besides, I'm still bewildered it's legal to even collect contact data without that contact consenting to the exchange of that information.

If I give $person my $number, I do NOT consent to 50 $people getting that data (Google et al). I no longer even have a reachable phone number since it's not worth the privacy trade offs as that data is no longer under my control. At least emails afford a bit better control.

We need to majorly rethink how data is exchanged between user and service, and if a smartphone has APIs to access contact information, they're smart enough to let me know which person uploaded my PII (so I can cuss at them!).