FlyerTalk Evangelist
Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: BA Silver, TK E+, AA PP, Hyatt Globalist, Marriott LT Plat, Hilton Diamond
Posts: 13,050
Seems to be a limit of 5 StayBaltimore tweets.
Searching #mrpoints on twitter comes up with a few people trying the 2014 version (autograph, renaissance, lovemarriottrewards, etc.) but I've not received any additional points that way.