Have you ever visited a site and all of a sudden another window pops up? Advertising? That's a popup. A Pop-up blocker will block these pop-ups and pop-unders (the ones you can see only after you close your browser window).
There are two remedies. Use a browser with a built in blocker like Mozilla/Firefox, or download a blocker. I use the Google tool bar.
Click here to see the CNet faces, learn a little about internet
connections and data, and download free software.
If you're reading this, thank a teacher. If you're reading this in English, thank a U.S. soldier.
what's a pop-up blocker?