The act of posting pictures, statuses and comments to facebook in order to attain further likes and comments, thus boosting one's ego and online social media exposure.
Person 1: Check out how many likes my profile picture's got
Person 2: 34, wow, good effort.
Person 1: Yea man, winning at facebook baseball!
Person 1: Just the 20 likes for my last status
Person 2: Nice man, good facebook baseball