Here's two very good account scamming guides you should read both made by Hasselhoff.
http://www.mmowned.com/forums/wow-sc...g-company.html
http://www.mmowned.com/forums/wow-sc...ts-easily.html
About scamming gold/rent companys, meh, they're getting very smart nowdays and it's very hard to scam 'em in my opinion atleast.