Have you ever realized that while you are surfing the net, some pages have many banners and add more pages that will take longer to download than? Wladimir Palant understood and created this great add-on for Firefox which allows you to get rid of them.
You just have to download it and install it and then you have to navigate faster than before. It's easy to use, you just have to click on a banner and choose 'Adblock' from the context menu and that's the last time you'll see that banner.
If you do not want to do this, you can select a filter subscription when Adblock Plus starts for the first time, but even the simple job will not be unnecessary, because the filter subscription will automatically block most of the ads.