I've got a small medium blog that is steadily growing in traffic. Sometime soon I believe that I will have enough traffic to where I can possibly solicit advertisors, arrange deals, etc. But to do all of that, I need to prove that my traffic is what I say it is. What is the best way to do that? I have Google Analytics installed on my site, for example, but of course I can't give them access to my account (read only), can I? Or is there something, like quantcast or alexa scripts, that I should be putting on my site to prove my traffic/visitors, etc.? Thx for any help...