At this point in the Ripple system you don't trust any issuer of USD that you don't trust equally with another issuer. You may not like it, but that's how it works right now.
Interestingly,
this does not seem to be true. It's only the UI that has this behavior. Power users can turn it off.
He is taking advantage of ignorance, while simultaneously misleading through half truths and lies. Read his post on the Newbie board if you're unclear on this.
He said he was going to deposit 1 BTC in to a person's Ripple account. A newbie who barely understands Bitcoin is not going to understand that in a completely different system (Ripple) that BTC is an IOU. Then add an additional layer of complication in that most people are not used to being in control of who they trust when it comes to money IOU's (government usually is) and you have a recipe for theft that is unnecessary and proves nothing but that Tradefortress is willing to hurt people in order to take down Ripple.
The worst part about it is he has credibility on this board and so newbies are liable to trust him (Luckily a moderator put warnings on his OP, since all warnings by other people were self-moderated by Tradefortress). Abusing this trust and not having moderators put a REAL stop to it - This is just plain wrong.
I don't know enough to comment about this specific situation. I do know that Ripple is very hard to understand and a lot of people are putting a lot of money into it. Therefore, I support TradeFortress's efforts towards promoting a skeptical attitude about it. Remember Pirateat40?