well, let us calculate a bit otherwise U wont believe the numbers ...
when I run a CS server (a HL mod) I can support 6 players on my 16 KB/s upload (which is then completely saturated) so each player gets 16KB/6 = 2,67 KB/s per player
so when u host an average CS server of 14 people u will have :
14 x 2,67 = 37,33 KB/s
which is: 37,33 * 60 = 2240 KB/min (= 2,2 MB/min)
and if we go for the hour :
2240 KB * 60 = 134400 KB/hr (= 131,25 MB/hr)
so the average CS server has an upload usage of about 132 MB each hour (rounded up cous there is also spraypaint upload/download etc)
NOTE : I used rounded off numbers in the post but calculations where done with the full numbers, so I calculated with 2,6666666666666666666666666666667 and not with 2.67 (using the windows calculator)
hope this helped a bit
whoopsey u where talking client (DOH) all that calculating fer nothing
well as client u have : 2.67 * 60 * 60 = 9600 KB/hr
it can vary a bit with rate settings etc, but this is quite close to it ....