This was a terrible program. While it didn’t necessarily block all ads, it did block my computer from fully loading and it blocked my e-mail for two days - I got NOTHING! I tried, in vain, to start my computer, and when it got three -quarters of the way loaded, it stopped and went black. For two days, I couldn’t get my computer going, or it kept going black and turning off. I finally realized that the trouble started happening right after I downloaded the app. It asked for a lot of information and asked me to make a lot of changes to my comuter. When I finally put two and two together, I unistalled the program, and voilå, my computer worked again. I DON’T have to buy a new one. I will never know who wrote to me during the time period it was installed, but at least I am getting my e-mails today. As I said, I hated it. I wish I could have given it no stars.