I am a big fan of Media Metrix data. They send out emails to update you on their statistics a gew few times a month and its a good way to see what’s happening in the web business world. Its interesting if you look at the top web properties for the US or for the world and see who generates the most traffic (unique visitors) each month and what it is that they do for their business. Do they do a lot of advertising or not? Are they a business or a consumer site? With 300 million people in the US why are the biggest sites only able to about 100 reach million people? These are only a few of the things that I lie awake at night worrying about being a web marketer. com Score Media Metrix continues to give me things to think about.