My most memorable interaction on steemit is my interaction with @pfunk.
I just made a tutorial post, compiled for three days, hoping that people will like it and I will get massive upvotes but cheetah mistakenly commented on the post. I was devastated until I reached out to steemcleaners and @pfunk dealt with the threat for me. It was a great relief for me. He even compensated me with a worthy Upvote. I can never forget that encounter.