In no particular order, here are some music blogs that I believe to some of the web's best.  You really should have a look through them, there's abit of something for everyone.  Enjoy...

 http://www.experimentaletc.blogspot.com/ - Expansive and insightful discographies of avant-garde/improv/experimental music's finest...

http://www.staticcollaborative.blogspot.com/ - A pioneering and exemplary project that documents pretty much everything alternative.  You seriously need this blog.  Abstract, industrial, dark ambient, drone, hip-hop, harsh noise, the fucking lot.  From Wolf Eyes to Wu-Tang.  It's also updated quite regularly too.  Whoever is in charge of this does a seriously great job...

http://glowingraw.blogspot.com/ - Great Boredoms discography, along with the odd psych-folk/experimental gem, definitely worth a look if you've got the time and patience...

http://www.deerhuntertheband.blogspot.com/ - Love or hate Braford Cox/Deerhunter/Atlas Sound, you can't deny that he's giving it a go and that he's a thoroughly interesting guy.  The quantity of music self-released by Cox is admirable at worst and I really enjoy what he and the rest of Deerhunter are doing at the moment.  I'm abit fucked off they aren't doing their own headlining show in London to be honest (nothing against Liars)...

http://www.terrornoiseaudio.blogspot.com/ - Clearly as abrasvie and harsh as its name suggests, this blog is an unrivalled necessity if harsh noise and power electronics is your thing...

http://www.upsettherhythm.blogspot.com/ -Yeah I might sound like a complete fool for typing this but, Upset The Rhythm is one of best things about living in London for me at the moment.  Great bands, great venues, great fun as well as emphasizing an admirable DIY ethic.  This blog (as well as their main site) offers pictures, information and links about artists on their label and those lucky enough to play their forthcoming gigs in London.  They seem like good guys and they clearly know what they're doing and it's all so very refreshing...

http://www.bloodistruth.blogspot.com/ - Comprehensive Swans discography, This Heat stuff, Robedoor, "Lee Scratch" Perry, even an extensive catalogue of knobbery courtesy of a massive Pink Floyd collection.  The sheer quantity of stuff here is great.  Someone has put in a monumental effort here...

http://www.nodatta.blogspot.com/ - Although the guy/guys running this haven't updated it for over two months, it used to be great before the RIAA seemingly unecessarily shut it down.  They need support!

htttp://www.eatmyartout.blogspot.com/ - Fantastic collection of noise/experimental rarities that is sadly not updated enough; And now for some reason it's invite-only so I don't really know what's going on with it at the moment.  I'm sure it hosted a Kevin Drumm split on it that pretty much changed my life!

I hope you enjoy this lot as much as I have in the past few months.  Most of these people put in alot of effort and are so passionate about the music they upload! As a consequence, I've been exposed to so much insightful and great music, the value of which is immeasurable.  Keep it up and thanks very much...