After this game my opponent accused me of cheating (which is really unpleasant for me to hear).
The question is what can I do about his nasty commentaries on my wall.
Should I just delete them or post something is reply ?
Here I quote them
This computer is very difficult to beat.
by Psy1985 14 hours ago
Computer would never blunder like you did on 18th move (22nd move looks natural but it's also bad - very humanlike). :D
He's just a sour loser, he had a won endgame and lost it.
yeah i don't think an engine would miss 45. Nxf4
Lol, I missed it. xD
Worst engine ever! Missed 45. Nxf4 and 51.Nc4+
Yep, looks like I am not that strong engine:)
The question is what I should do with his commentaries?
Your opponent was disappointed because he essentially owned you for most of the game but you didn't collapse, quite like an engine. Take it as a compliment.