I don't take any sides yet, as I don't know much about analytics business, but the first part of Linda's reply is confusing. She talks about how they measure pe

I don't take any sides yet, as I don't know much about analytics business, but the first part of Linda's reply is confusing. She talks about how they measure people vs cookies, but: 1) when you're comparing websites, does it make any difference if an analytics system measures "people" (which is impossible to do precisely) vs "cookies" or unique IPs? In my opinion, the latter is better for comparison, because it's more precise. 2) she didn't address the following point: "The only problem was that Comscore's numbers were different than the SiteMeter traffic that Gawker and Weblogs Inc. were publishing at the time." What is the reason for the difference between SiteMeter stats (unique IPs and cookies) and "people" as measured by Comscore?