What to use, to check all the websites I'm hosting's bandwidth usage?
 

I googled to no avail, I need something that can tell me...
OK

U/D for aug-sep
site1 300mb
site2 100mb
site3 750mb
site4 900mb
etc

I know it should be possible I am just not sure what to search for.

if I can find how many hits each site got that would be a bonus :)

So anyone with experience in this?

This page should be useful
Webalizer can be used to check the hits etc, the bandwidth is also mentioned. But I am not sure how you can restrict the bandwidth.

Cpanel is another thing which you can use for all your webhosting but I guess thats not free.
Search online for some alternatives.

try this: http://www.ispconfig.com/ it is similar lets say to Cpanel more or less and its free.