so there is an easy way to add CB leads to your Aweber lists. i wasn't aware of that technique.

instead, what i do is send off the required fields to the Aweber addlead.pl script. it's the same as having someone fill in the opt-in form, but you do it for them using the CB fields that are provided from the purchase transaction. i use curl in PHP to do the form posting request. works fine, but it means you need to do it in software.