http://www.mmowned.com/forums/wow-scams/120921-wow-scam-guides.html
Read the sticky's or you might start to get a bad name around here. Just playin.
Also, try to contribute fun or interesting.
I would start simple, such as the /dnd scam or possibly the middleman scam.
If you want account go for phishing.
All are in the link I gave you. Again, I'd start reading the sticky's around the forum!