[oldhead]

Originally Posted by azxten [You must be logged in to view images. Log in or Register.]

Use a service like this...

http://www.proveout.com/r/phone-verification.html

Tie account creation with phone verification. This eventually adds a cost to creating an account when you run out of numbers to use. Also a lot of these services allow you to block virtual numbers from service like Google talk, Skype, etc and payphones.

I like this idea but would be very costly.

Any other services out there that would accomplish the same thing but cost less?