For example, ebooks coded with your ref links.
Games encoded with promotional material and your ref-codes (like casino sponsors offer which I have already)
Or anything along these lines please
I have a couple ebooks coded for download, and casino programs with these features but if anyone else has something I can add, that would be great.
I know it's pretty much a long shot but worth discovering if there are any of these materials available to offer my surfers on the new site i'm working on.