Greg Ginn — Musician born on June 08, 1954,

Gregory Regis Ginn is an American guitarist, songwriter, and singer... (wikipedia)

I still think the best metal bands have a blues feel. The first Black Sabbath album is kind of a bludgeoning of blues. Deep Purple also started out as a blues band.
If people are really excited about their music, and that's their primary motivation, then that comes through in demo tapes. That's the most important ingredient.
The public is usually slow to catch on to new things, and it's important that musicians stick to their guns and not look for that instant gratification.
The REM and Nirvana successes don't mean much to me except as a potential distraction for bands who want to cash in on the trend. Don't try to sound like someone else. REM and Nirvana don't sound like anyone else.
The biggest disappointment has been seeing the number of people in this business with very shortsighted views.