Fancy getting some free advertising from Microsoft for an app you've developed? Simply publish five new Windows Phone 7 applications to the Marketplace by June 30th with the entry code you receive from entering this competition and you will receive 25,000 impressions of free mobile advertising for the app of your choice (from the ones you submit).
The 25,000 impressions equal to approximately 60 days of promotion and the prize limit is 200, so be sure to enter quickly and get your apps submitted. Please note that this is only available for the US. You can receive up to four prizes so you could end up with 100,000 impressions available (25,000 for four of your apps). If you receive more than one prize, one app will have it's 25k worth of promotion each month from June onwards.