I'm a big fan of citingreliable sources, since this is the only way Wikipedia will continue to be a respected source of information. Citation templates can help.
Neutral
Our neutral point of view policy is non-negotiable. I have my own biases, of course, but I try to leave them behind when I edit Wikipedia. If you think any text I added is biased, please let me know.
Free
I think free content is the cat's pajamas. I have a very good layman's understanding of copyright, and have written a helpfile on the subject. Our own non-free content policy is very important, and should be carefully read by anyone thinking about uploading non-free images.