Jazz Advance (Free Jazz/Improvisational Music Blog)
Among other things, they'll "investigate jazz influences upon rock musicians like the Byrds, Doors, Grateful Dead's Jerry Garcia, Neil Young, Velvet Underground, Sonic Youth, and Wilco's Nels Cline. This blog will also discuss Miles Davis's electric music, which borrowed from James Brown and Sly & the Family Stone."
So far they've had posts on Threadgill, Zorn, Coleman, Oliver Lake, and Lester Bangs. ("Bangs throws down the gauntlet, saying most rock 'n' roll is 'garbage noise,' while 'great jazz is great art.' But 'garbage noise can also be great art,' citing the VU, Sex Pistols and Iggy Pop & the Stooges. No matter the musicianship, free jazz and punk meet at that intersection of 'brain-shredding intensity.'")