http://mashable.com/2010/06/17/social-media-day-meetups/

Mashable is hosting the first-ever worldwide Social Media Day celebration on June 30 and you're invited. Last week, we announced Social Media Day—a global celebration of the revolution of media becoming social. Readers responded enthusiastically by signing up to organize or attend more than 340 meetups in 74 different countries.

TweetMeme Community Contributor posted about a year ago