I am not sure that this shouldge go under this subject - this is a not a contest, rather bonus for affilates:

Croata.com is offering bouns of 100$ in goods for 100+ $ of affilate money made in one month.
Contest is valid till 1.1.2005 - every month new contest, so overall bonus can reach 600$.

http://www.croata.com/about/affiliate.php