I often go to youtube for searching informative videos. I use youtube at my home computer, its really a good site and provide mostly all the information to the users. And the advantage is that you can see it practically how it can be done. Thanks for youtube, but yesterday I opened the youtube as I often do. But I was surprised to see that I was logged inside someone's account. Youtube had automatically logged me inside someones account, and it also showed me the results of what the user was surfing about. It was surprising that I was not even logged out, I mean I never log out from my home computer. How is this possible. Some one has hacked my account or is it something else. Any advice.