Ive been using it for years, there are a few sites now that manage to slip a pop up window in occasionally, usually its a "pop under" or minimized in other words, still nothing like IE, check out some of the available extensions also, lots of handy stuff available
I would like to download Mozilla again. IE went crazy on my computer so I deleted it a long time ago. I've always used Netscape and it doesn't give me many problems. They have a pop up blocker. Some still get through, but it's also blocked many. After I log all my bookmarks and clean up my tower, I'll download it.