The Netflix prize was a competition for $1M to improve their recommendation algorithm. Check out ChallengePost to see current competitions offered by companies.<p><a href="https://en.wikipedia.org/wiki/Netflix_Prize" rel="nofollow">https://en.wikipedia.org/wiki/Netflix_Prize</a><p><a href="http://challengepost.com/" rel="nofollow">http://challengepost.com/</a>