Save SubCulture
"A Dynamic Home for Artists and New Music of All Kinds," the home page says on the Web site for National Sawdust, a cutting-edge venue in Williamsburg that opens, after much anticipation, in October. It's an exciting, ecumenical sentiment, but not a new one, since the Brooklyn venue is following a trail blazed by two Manhattan predecessors, (Le) Poisson Rouge and SubCulture, both situated on Bleecker Street. Both …