Social Media Day 2011 is a big official-unofficial deal around the world, and Major League Baseball is all over it. Go here for all the details on how to get involved and win cool stuff. And take a look at how 30 Major Leaguers are embracing social media today.

How are you celebrating Social Media Day?

In other news:

VOTE, VOTE, VOTE! The 2011 All-Star Game MLB.com Ballot Sponsored by Sprint closes at 11:59 p.m. ET Thursday. Then watch the Selection Show at noon ET Sunday on TBS, and at that point you’ll be able to dive into the Final Vote.

The new Latest Leaders for June will be out shortly. Good luck!