[Air-l] web browsing patterns and distributions?

Hi All, I've been looking for information on web browsing patterns in terms of page exposure. Ideally, I'd be interested in roughly how many pages people visit in a given time period and the shape of that distribution (i.e. most people look at a few pages, but a long tail look at many pages). If anyone could point me to some any broadly applicable information about how people "acquire" new pages (search engines, links, email), I would be a happy modeler of user behavior. I've found plenty of user studies on browsing behavior *inside* a website, but I'm looking for domain-level use for a project on trust mechanism simulation. Thanks! /\llan Allan Friedman PhD Student, Public Policy Kennedy School of Government