Here are a few that I found to be useful in finding Briefs, investigations and Collections. Remember, the more skill points you can apply to your Hero, the stronger you make your player and the League!
http://www.dcuniverseonline.com/en/index.vm
http://dcuo.mmorpg-life.com/
This one is good as well, but appears to be down today.
www.dcuosource.com
http://www.dcuniverseonline.com/en/index.vm
http://dcuo.mmorpg-life.com/
This one is good as well, but appears to be down today.
www.dcuosource.com