Most of the complaints have to do with selling USfine your game accounts. You should be aware that there is no such thing as a safe trade in account sales. Because the account is always ultimately controlled by a third party -- the game owner -- and transfer of title is not recognized by that third party it is virtually impossible for this type of trade to be safe.
The majority of you are griping about entering a market which is fundamentally unsafe and being burned. You should blame yourselves, not the other party.
As far as I have seen USFINE is very good with handling legitimate customer complaints. I have seen no evidence to suggest their operation is a 'sham'. On the contratry, they seem to have many satisified customers -- at least with respect to the safer trades: gold and items.
Basically aside from the above there is a phenomenon at work here called 'sample bias'.
Because only those who have a bad trade come to the USFINE section to complain, you only ever hear about the bad trades and the really really good trades, but none of the ok trades in the middle.
As I stated earlier, I will only end the partnership if I become sufficiently convinced that USFINE are not conducting business in a legitimate manner. As it stands I believe they are, and their 'bad reputation' is mostly a result of sample bias.