SXSW Music panel. Panelists: [Gerard Cosloy](http://www.matadorrecords.com/), [Amrit Singh](http://stereogum.com/), [Sean Adams](http://drownedinsound.com/), [Maura Johnston](http://idolator.com/), [Carrie Brownstein](http://www.npr.org/music/), [Jason Gross](http://yeweiblog.blogspot.com/) *[Official description](http://2008.sxsw.com/music/conference/panels_schedule/?action=show&id=MP060342): Music blogs have emerged as tastemakers by incorporating unfiltered opinion, audio/video playback, and immediate publishing. As their initial impact expands into the realm of record labels and event promoters/sponsors, can they retain the personality and quirks that…