Buyer Acquire

The vendor I have been using is Buyer Acquire and they have options I like and I have been pleased with them. Some people do get upset because their number was "captured" when they were only seeking information. However, I have found that if you wait for an hour or so before calling them - then tell them up front how you asquired their number and the reason for the call - it generally works!

Any other capture systems out there that you like?