I played ANR a lot in 2015, mostly using OCTGN. On OCTGN I used to play people and add the good sports to my friends list. After a month or so I would have 20-30 friends, and could play them repeatedly (someone would generally be online at all times).
Over hundreds of games played, 99.9% were very enjoyable experiences, generally with chatting throughout.
Yesterday I started on Jinteki.net, playing I think thee games. One game was fine but in the other two I encountered some issues:
(i) I beat one player with Valencia, he the made a comment along the lines of, "I hate Valencia, she's so cheap, just spamming Blackmails to win" before leaving the game.
(ii) Playing as MaxX I screwed up and lost my recursion. I had Faust on the table, three cards left in my hand and none in my deck. My opponent (HB) had two ice on all servers, the outermost one rezzed, something like Heimdall 2.0. I conceded (<1% chance to win) and he got annoyed. Seems he wanted me to watch while he slowly found his agendas and scored them one by one. I would have offered to play a rematch but the feature seems not to be available.
It seems to me that Jinteki.net is like Magic Online, i.e. with zero social aspect. You can't chat with friends, only in the main chat room. This makes arranging games with them much more difficult. Games tend to be against an unknown opponent with little to zero chatting. And as a result you may encounter issues such as the above with more frequency than on OCTGN.
Or did I just get unlucky?