TadDude wrote: Think of it as a measure of how long you made your opponents wait. If you have 10 games where the status is "My Move" then 10 opponents are waiting.  Each second that passes counts as 10 in your total time.

lithium11 wrote: You could be right there. That didn't cross my mind to be frank. That's not really time per move then is it? It is practically impossible for anyone to manually calculate.

corum wrote:

 It depends how your mind works. I can see how you can think that "time per move" would be simply the total amount of time you have been a member divided by the number of moves you have made. But it would never cross my mind that this would be a useful measure. It is quite obvious to me that it relates to how long on average you take to make a move which is different of course. So imagine you're a member for an hour and in that time you play 5 games; further imagine that you opponent moves instantanously but that you take 15 minutes to make your move. In that hour you make 4 moves in each game. Then your average time per move will be 15 minutes even though you have made 20 moves in an hour. Actually, if you make a move every 15 minutes and you are playing 1000 games simultaneously (as one guy on chess.com is) then (assuming that you still make a move every 15 mins in each game) you have now made 1000x4=4000 moves in the hour, but your average move time is still 15 minutes. The way you would calculate it then the avaerge move time would depend upon how many simultaneous games you are playing whereas the way it is calculated it is independent of how many games you are playing. This is more useful - when someone challenges you and you see that their average move time is 1 hour then you know that on average he or she will keep you waiting for about an hour per move.  It's the only definition that makes sense. Hope this helps.