A few weeks back, the social media blog Mashable announced that they are celebrating Social Media Day on June 30th. In accordance, we decided to do a little something special ourselves.  Tomorrow, we will be featuring some guest commentary from a few of social media's finest -along with some other voices that you'll be familiar with - on how artists should use social media.

Expect to hear from Refe Tuma of Creative Deconstruction, Mike Volpe of HubSpot, the guys behind The New RockStar Philosophy, and Mike King of Berkleemusic.com, among many others.