Not sure why, but there seems to be a real lack of this type of addon, personally I think this is one of the most essential addons for any online vendor.
If this has not already been done yet, I'd like to know if anyone isinterested in developing a competition/promotion addon.
The purpose of the addon would be to allow customers to enter a draw to win prizes based on certain criteria such as, amount spent, date joined <> particular date etc.
Integrate with social media sites, particularly facebook.
Would be good if there is something for version 4.0x