Did a quick and easy initial trade, but was not honorable in supporting it.
I traded for a Humble Bundle gift link (OAuth rather than key) which I accidentally applied to my humble account even though I already own the game meaning the game cannot be redeemed. Humble support requires the purchaser to submit a ticket to un-"attach" a game, so I got in touch with this user on Steam and they told me that they would get in touch with the purchaser about submitting a ticket and get back to me.
After after telling me this, I didn't hear from the user for a couple days and assumed they were following through on what they said. Then I checked my friends list and saw they were no longer there, and that I had been removed and blocked on Steam without any communication. The honorable thing would have been to simply tell me if they didn't intend to follow through on helping fix my mistake, which I would have accepted. Telling me one thing and then doing another and cutting off all contact isn't what I would consider honorable trade practice.
