April 18 is Record Store Day. The National Association of Recording Merchandisers is sponsoring this celebration of "the unique culture of indie record stores all year long" with sales, in stores and other mayhem. NAMBLA, I mean, NARM has the backing of fellow sponsors Music Monitor Network, the Coalition of Independent Music Stores and the Alliance of Independent Music Stores. It has the historical success of Record Store Day 2008, which saw sales spike at independent record stores all across t