Had terms agreed on and ghosted the day of the meet.

Had agreed to terms of trade, had agreed to meet the next day in John's Creek, messages were exchanged back and forth at fairly regular intervals, then he stopped responding all of a sudden.

Sent him several messages the day of the meet that I was still heading to John's Creek, but no response.
Seems to be a habit with him, as the two previous negatives state.
If you send me a message and tell me you changed your mind, you're unable to make it, or you just decided you don't want to deal with me, I won't leave you a negative - just communicate - in a world of instantaneous communication, there's really no excuse why you can't tell me the meeting is off.

I've been on this site for almost 10 years and never gave a single negative feedback until this year.
And it's been for ghosting - just communicate.