Careful rolling on CT loot.
If you're weird like me and like to collect CT loot and store it on your retainer, keep very good track of what you already have and make sure you don't mis-click when you want to pass.
You can be awarded a useless duplicate item, waste your roll for the week, and GMs will not help you. Most of them won't even understand your problem. It took me four tries to get them to understand that I was asking if they could reset my roll, and they -still- just insisted I post on the bug report forum, which is all kinds of wrong (backed up by the fact that said post is now in "not a bug report").
It's a minor issue, but it can be a real kick in the pants to waste a week because you clicked the wrong box. Mostly I wanted to give a heads up that if you're used to WoW-like GM service where they can fix loot mistakes and whatnot, you won't find that with this game, so don't waste your time opening tickets and trying to explain to GMs the difference between a bug and an oops.
Cheers!