Jason,
I was going to write up an iTrader how-to for my forum. I tend to get in depth with things because you'd be surprised at how many members can't just figure things out. So I was going to have a little information about what each icon meant, how to leave a rating, etc. If I get something in a timely manner I'll send it to you.
As for the graphics... I was hoping someone would use something similar to the online/offline ones here at vB.org... a green plus for positive, a red minus for negative, etc. So if anyone reads this and wants to take that into consideration... thanks
Ryan