I wrote a story on Wednesday detailing the problems Web publishers have getting accurate independent measurements on their audience. This is a problem that has plagued the Internet since Web sites started getting traffic and advertisers began targeting their ads to that traffic.
The focus of the article was on ComScore and Nielsen Online, the two largest measurers of online audience. I also mentioned a couple of other companies that are using multiple methodologies to compete with those companies.
I didn't mention Hitwise, a company that also measures traffic but doesn't really fit into the same category with … Read more