I always retained what I learned when it had good memories attached. If they were not good memories, they were at least memorable.
This language learning site is probably not the best place to find people to fall in love with. There are specific match making sites for that purpose. However, when you build memories with new friends here there is no knowing where it will go.
It seems there isn't enough moderation to go either way. That's when trouble arises.
Seems to me that some people aren't utilizing this site as best they can due to their hesitation regarding the intentions of the person(s) on the other side of the screen. I can definitely see how moderation or civility would make things smoother between users.