I would say so, if I've got a spare hour and want to play a game, I want to fill that hour.
I'd make the following changes:
1) Discourage it by increasing points lost by maybe 25%
2) Not allow it during an opponents turn (hate players that see you're winning, then you play a mammoth double eagle type move at the end and they concede)
3) Show a stat before creating a game (also would be good to show average game duration, nothing worse than a play that takes an hour to play the game), showing % of games conceded
I'd make the following changes:
1) Discourage it by increasing points lost by maybe 25%
2) Not allow it during an opponents turn (hate players that see you're winning, then you play a mammoth double eagle type move at the end and they concede)
3) Show a stat before creating a game (also would be good to show average game duration, nothing worse than a play that takes an hour to play the game), showing % of games conceded