I was trying to open a trade with someone today and was unable to create the trade, and unable to e-mail the user directly. My guess is that I've been blocked, although I have no idea why.

Anyways, the point is that I'm still able to see this user in my trading opportunities, and I'd argue this isn't a real opportunity. I totally get why you wouldn't want a "This user has blocked you" kind of message, but what about blocking hiding both users from each others' TO pages, not just the blocker?