Many websites we visit track what we look at on their site and give us no clue in what type of data they are gathering during our visits. MH has 5 entities that track each of your visits: 1 social network (Facebook Connect) and 4 companies (Doubleclick, Google Adsense, Omniture, Comscore Beacon) tracking every click. Some even collect data on where you went before and after your visit, and more. Interesting, eh?? And I thought the advertising was annoying.
Take a look at DoNotTrackMe if interested.
"Social buttons connect with websites that focus on building social relationships , and help members share content, interests, and activities with their contacts. With social buttons, social networks are able to track your activity across the internet.
Advertising networks share information across many different sites. They collect data, display advertising, place cookies, and do a variety of other things as a paid service for their clients. Typically, the customer who buys from an ad network is a publisher who's interested in displaying targeted marketing content on many different websites.
Tracking companies provide individual website owners with tools to analyze and monitor the visitors that come to their sites. These analytics networks collect data on how long you stayed on a site, what you clicked on, where you went before and after your visit, and more."