Hi again Simon,
regarding RSS feeds you could syndicate SPORTSBETTING.COM’s blog posts. With the upcoming football season there is plenty to write about (previews, injury reports, odds etc.). And each post could close with special, or latest, promotions for example.
For demonstration purposes, here is Bodog’s affiliate feed (currently under construction): http://nation.bodoglife.com/feeds/rss-double-down/?id=334192.
As you can see, both the feed url and its item links contain the affiliate ID.
Thanks