According to their twitter: A stolen base just happened! #FreeDoritosTacos for America on Tuesday, October 30 from 2-6 p.m.
Chris actually posted more info about this on the main page today: http://www.freestufftimes.com/free-doritos-locos-taco-at-taco-bell-on-1030 (Guess Chris was actually watching the game last night instead of watching twitter ) There's a locator link there, as well as a link to the actual mlb/taco bell promo page. All I can add is: NOM NOM