Bjorn3d of course! - members and staff are really nice and fun to chat with.
Tom's hardware - to check their cpu and gpu recommendations of the month
KitGuru - love the community here
The Real World Labs - mods are very nice and friendly.. gave me a free hardware the other day!
TweakTown - just a reader
Hexus - just a reader
eTeknix (lately since it's an affiliate of this site)
HiTech Legion - youtube reviews are very entertaining! http://www.tastypc.tv/
- I think I'm in love with Lauren! LOL
Anandtech - cpu and gpu bench / mobile phone reviewshttp://www.cpubenchmark.net/
- cpu benchmarking site (not everyone find the results credible but I do)http://www.dragonblogger.com
- blog and wordpress stuff, some gaming stuff as wellPro-Clockers - TDub is really nice! sociable and very friendly / small community
WordPress forum - more wordpress stuff
Hardware Heaven - mostly trolling with the members LOL (along with CDsDontBurn)
The SSD Review - just lately, mods and members are funand yes I visit these sites and their forums on a daily basis.