Smart PopUp Blocker stops all annoying popups and popunders.You can allow popups by holding down Ctrl while clicking a link. You are optionally notified when popup ads are blocked by a flash of the tray icon and Custom-Speakers sound (or PC Beep).

It optionally blocks banner ads for faster surfing. The available options for the blocked ads are: empty frame; '[AD]'- a frame containing the text '[AD]'; a frame containing the ALT text of the banner image; or custom image.
Smart Popup Blocker supports all versions of Internet Explorer. It's easy to use as it's self configurable. The program runs in the background. It is enabled by default but you can quickly change this setting.