As you might know, all modern web browsers contain a built-in popup blocker. But the real question is "Does it really work?". This is where our friends at PopupTest.com come in handy.
This web site enables you to test your browser against various techniques of popup spamming. And if your browser fails in any of the tests you can always download and install "FireFox", the free web browser that passed all tests without using any extra plugins (extensions).
Anyway, PopupTest.com doesn’t only test your browser against bad popups, it also checks for the good kind of popups, the kind that you want to appear. And also a test agianst media flooding websites.
It’s really a great free service. That helps you determine which browser is better in a single battle.