Here's the places I go to regularly:
This site is my main goto site
Reaper forums - mostly nice and lots of help there
KVR - some airhead jerks there, but mostly nice and lots of help there
HydrogenAudio - way too many idiot snobs, but some info and codec downloads you can't get anywhere else
GearSlutz - it has definately gone down in quality and has a lot of backbiting and lame idiot trollage, but some of the discussions about the music industry are pretty deep. It's kind of an interactive ad site these days also. My ignore list there is humongous just to make browsing bearable.
VintageSynth - great resource for everything about synths, including software. unfortunately, it's not very busy anymore. Also, the registration messed up on me and I can't get back into either of my accounts because my email address changed. None of my passwords work, so I won't be posting there anymore
Future Producers - slightly amateurish and too focused on certain music genres but still some cool knowledgeable people.
Ubuntu Forums - support for several Linux OS distributions. Decent enough that I keep going there for help when I need it. The off-topic section has way too many Microsoft Windows trolls, but that's not the bulk of the site.
College Humor - too many lame sex jokes, but otherwise some of the best internet jokes and GIFs
CrazyBoards - mental health support, but it's basically the blind leading the blind. watch out for some of the hostile people there, including the mods and admins. they try to cover all the bases. good for a sense of not being alone with mental illness. bad for actual advice on coping with psychiatric medicines. I don't go there much anymore. If you go to the dot com instead of the dot org, it's a skateboarding site
Mibbit.com - IRC chat front end. Good for certain types of chat rooms. I found a few decent schizophrenia chatrooms there with friendly people who also have schizophrenia. Also use AdBlock there because there's some malicious ad scripts that can hijack the page without you even clicking on them. Once you find the chatroom that you like, you could use an IRC Chat Client Program instead. I have some regular friends there, but it's not my main chat hangout though.
Community Channel - A really funny Australian chick who does videos regularly. She's usually pretty funny and clever.
AddicTech - a great site for hearing good new electronic music. no complaints except a lot of Tipper copycats since he's always number one on the charts there.
Portable Freeware - good source of freeware Windows programs that are specifically non-invasive and easy to install and can be run from USB drives. A lot of these end up being compatible with Wine on Linux also.
Distro Watch - a good place to keep tabs on all the tons of new and old Linux OS distributions. You can get full details on LiveCD's here. Searchable.
Schneier Blog - good articles and news from some of the top security and internet security people. No complaints but it's usually a lot of bad news about privacy and security. But it's better to know than to be ignorant. Sometimes the articles are funny.
FireFox Add-Ons - really sophisticated Mozilla Firefox extensions, addons, and themes. Some of them are great, others have some design flaws. Fun to try though. Rated and reviewed so you aren't installing blindly. I currently use 20 different addons to enhance my web browsing experience. I like all 20 of them too. I have others backed up in case I need them later (proxy addons, etc).