I Thinks there is an award you can get for missing very short Putts.. not sure about that, but if there is, then it's extra bonus points when you get em..
Anyway... I usually give anything in the 2ft or under range, St.A#2 or any Oak greens, I think of not giving putts, but most of the time I do.
I think the 'Concede Putt' can bring in more anger within a group, than it's really worth. I understand that it speeds the game up, like if the other team is on the 6th shot and your team is going for Bird...then concede is good, but anything else I think we all should putt out. I would always Concede anyway... except for the 'win the match putt'.
Sometimes, I would concede, concede, concede then not concede, which causes the other person to miss...mind games...lol, but that's cruel.
Cheers
Roger