I think you will find it very hard to get exact traffic details of a website you don't have access to. The only real option you have, is to get a rough idea using alexa.com -- Phil
Not really. I use Quantcast for rough approximations of sites that are not participating in the Quantcast system. My site is a participant, and the information given is reasonably accurate when compared to cpanel - though it is off a bit. Rich
Alexa is a pretty good one i would say. It might kinda look confusing but good for general traffic of the site