check out:
http://MarriottRewards.com/UnexpectedBonus
When I clicked the link I was shown the offer:
•Register by July 31, 2013
•Stay 20 paid nights at any participating hotel between May 15 and September 2, 2013
•Earn 35,000 bonus points, plus an additional 10,000 points after 25 paid nights (up to 45,000 points)

When I signed out of my MR account and re-clicked the link, I was shown:
•Register by July 31, 2013
•Stay twice at any participating hotel between May 15 and September 2, 2013
•Earn one free night after each second paid stay, up to two free nights
•Enjoy your free nights at any category 1-5 hotel worldwide



http://news.marriott.com/2013/05/sta...promotion.html