Our friends at Mashable are putting together a worldwide day for Social Media aptly titled "Social Media Day" (hashtag #SMDay for you Tweet-a-holics).Hear about it here from Mr. Mashable himself - Pete Cashmore:Let's be sure to head out and represent Social Media Club of Los Angeles at the LA event in Culver city. Here's the link to the event information: Meetup Event Page.For the official Mashable post on what you can do to participate in #SMDay, head on over here: http://mashable.com/2010/06/30/happy-social-media-day/.