Here are a list of web site I frequent and just making sure you folk know about them.

News:

 Wow Insider  http://www.wowinsider.com - also has some nice leveling guilds for classes and skills

Game Sources of info:

Thottbot http://www.thottbot.com

WoW Head: http://www.wowhead.com

WoW Wiki http://www.wowwiki.com

 WoWDB http://www.wowdb.com/

Character View/Tuning

Currenly working

Mr Robot http://www.askmrrobot.com/wow/gear Check you best in slot at different levels.

WoW Heroes  http://www.wow-heroes.com/

RAWR http://rawr.codeplex.com/ 

RAWR Web-client  http://elitistjerks.com/rawr.php

Blizzard Armory http://armory.wow-europe.com/

Talent Chic http://www.talentchic.com/  

 WOW popular  http://www.wowpopular.com/ Like Talent Chic but with more stuff like glyphs and gems. This dose not always tell you what is best, just what is popular. Its allways a good idea to check  elitistjerksto see how the maths works out. Also you can use rawr  to see how the diffrent enchants and gems change ur stats befor you spend gold on them.

Appears to be no longer maintained

Be Imba http://be.imba.hu

Theory Craft

elitistjerks http://elitistjerks.com

Max DPS http://www.maxdps.com

Add-Ons

Curse Gaming http://www.curse.com