I want to pass an ad tracking code from Site A to Site B and then on to Aweber... So that I can determine on the AWeber side when the user opts-in WHAT ad they came from... AWeber wants me to create multiple forms - I don't want to do that because I'll then have to have multiple landing pages for all of the ads, etc... Can't this be done as follows: landingpage.htm?ad=127 --> then "127" get set to some hidden AWeber field and passed onto AWeber in the opt-in process? Anyone have any experience with this?