If you’re like most web users, you assume that your browser history is private. For example if you visit an online store, you assume they can’t see if you’ve been looking at their competitor. Just a few weeks ago I assumed this was the case. Guess what?
In fact with a few well crafted lines of Javascript, websites can examine your browser history and record what pages you have been to. Keep reading and I’ll tell you exactly how it’s done and introduce you to a service that any webmaster can put on their site to see what pages their users have visited. I’ll also tell you exactly what type of information can be retrieved, and how you can protect yourself.
clipped from: www.merchantos.com 