Pop-up or pop-under windows--ads from companies trying to get you to try or buy something can be time consuming to close if not just plain annoying. These pop-ups have even led to a lawsuit against an online advertising network, according to CNET news.com. A survey by Statistical Research shows that 62% of active internet users felt strongly that pop-ups interfere with their web usage.
Websites like adshield and panicware have come up with a way to prevent the pop so to speak with shareware. Both supress the opening of another IE or Netscape window when one is already open--the panicware version will allow you to open another browsing window by holding the "control" key, giving you the chance to check e-mail or surf another website. Panicware also has an enhanced version you can purchase or use on a 30-day trial basis.