ThinkStock are celebrating their one year anniversary with a party photo contest. Submit your party photo and you could win an iPad. Or a trip valued at US$5000.

ThinkStock is a subscription-based microstock site owned by Getty Images that enables customers to easily choose from a selection of royalty-free images pulled from Getty Images, iStockphoto and Jupiterimages.

Fancy your chances in their party photo contest? Get the details on their Facebook page.