I don't know how I picked up this nagging thing up but all of a sudden I started getting popups in the lower right area of my browser that my Norton Antivirus has expired. Click here to install. Well, I have never installed Norton on my Windows 7 machine. I ran Malwarebytes and also a scan using Microsoft Security Essentials. Neither of them detected it let alone got rid of it. I did an internet search and found out there is a way to remove it using the Google Chrome notification settings. Worked perfectly. Just select it and then remove permanently. If you come across it just do a simple search on it. Different browsers such as IE and Firefox have different methods to remove it.