Do you have any Ads to use to promote your referral program?
Yep, we sure do:
300x250: http://images.mumbleboxes.com/images/ads/300x250.jpg
728x90: http://images.mumbleboxes.com/images/ads/728x90.jpg
160x600: http://images.mumbleboxes.com/images/ads/160x600.jpg
Feel free to rehost them our just hotlink from our images servers.