Messenger Popup Blocker Free Edition
Messenger is a service that comes with Windows XP, NT, and 2000. Advertisers have taken advantage of this by sending ads over this service. Messenger Pop-up Blocker is a free program that blocks 'messenger pop-ups' from appearing on your desktop. It does not block other pop-up ads while surfing... Messenger Popup Blocker does not in any way disable you from instant messaging (AIM, MSN Messenger, ICQ).
http://www.capehostpro.com/downloads/messenger.exe - 261Kb - Download - Screenshot

Popup Begone
Popup Begone - Stops All Annoying Popups Forever. It works with Internet Explorer and it actually Prevents Popups from even loading, drastically increasing your overall Internet Speed. Popup Begone even now has Advanced MS Technology that blocks Messenger Service Popups. ... Plus with Popup Begone when you Register, you will receive FREE LIFE-TIME UPGRADES. ... With Popup Begone you can have an icon flash or hear a beep, but why? ... With Popup Begone you have total control, you can even accept certain popups you want while blocking all the rest.
http://www.popupbegone.com/trial/trialsoftware/pbtrial.exe - 899Kb - Download - Screenshot

AdsGone Popup Killer ad Blocker
Finally, a Solution to the Web's Most Hazardous and Disruptive Problems: Blocks popups, banners, flash ads, messenger service ads, and detects spyware that serves ads. Blocks ads in Kazaa, Morpheus, Gator, ICQ, MSN, AIM, or Trillian. Thousands of people all over the world are already... With this program, you can finally maximize your enjoyment of the Internet without ever having to worry about those mindless, irritating and potentially damaging popup advertisements. ... By almost every standard, AdsGone has established itself as the leading popup and banner elimination software available.
http://files.a1tech.com/files/adsgone.exe - 2Mb - Download - Screenshot

Xavier PopUp Killer
Xavier's Popup Killer will kill all annoying pop-up windows before they appear on the screen. The popup stopper has full support for both pop-ups and pop-under ads, and each time a pop up is closed you will hear a cute sound effect. To allow pop-up windows you can temporarily disable the pop-up... Xavier's Popup Killer will also kill the new breed of pop-ups called "Messenger Service spam". ... Messenger Service pop ups can spam you even when your web browser is closed. ... Xavier's Popup Killer will also recognize and kill hostile activeX controls from companies known to develop spyware...
http://popupkiller.xaviermedia.com/popupkiller.exe - 977Kb - Download - Screenshot

AdsBlock Popup Stopper and Banner ad Zapper
Don't let unwanted Popup and Banner ads Violate Your Computer - surf the net Hassle Free with AdsBlock: Blocks popups, banners, flash ads, messenger service ads, and detects spyware that serves ads. Users agree AdsBlock is extremely easy to install. You will receive free automatic upgrades... AdsBlock is the only solution you'll need to stop invasive popup ads and get the most out of your time on the Internet. ... This unsurpassed spyware detection and ad blocking software will keep your connection running cleaner and faster.
http://files.a1tech.com/files/adsblock.exe - 3Mb - Download - Screenshot

Sureshot PopUp Killer
Sureshot PopUp Killer is an aggressive pop-up stopper preventing all annoying pop-up windows from appearing as you surf the web. The popup killer has full support for both pop-ups and pop-under ads and will kill them even before they appear on the screen. ... Sureshot PopUp Killer will also kill the new breed of pop-ups called "Messenger Service spam". ... Messenger Service pop ups can spam you even when your web browser is closed. ... An unique Sureshot PopUp Killer feature is that it will kill all pop ups and rotating banners ads from file sharing programs and the spyware/adware that are...
http://www.bysoft.se/sureshot/popupkiller/popupkiller.exe - 977Kb - Download - Screenshot

Ip-Harvester
Ip-Harvester can send popups by Windows messenger service.
http://www.e-advertize.com/down/Ip-HarvesterEn.exe - 293Kb - Download - Screenshot

Windows XP Tweaks
Windows XP Tweaks will make Windows XP more responsive and less irritating by performing the following system tweaks: * Loads the kernel (Windows XP system core) into physical memory instead of virtual memory - Note: Physical memory (RAM) is many times faster then virtual memory. ... * Forces Windows XP to use more physical memory * Disables the Indexing service - Improves Windows XP performance * Disables the Messenger service - Removes annoying messenger popup advertisements Windows XP Tweaks performs all the tweaks automatically when you install the program.
http://www.capehostpro.com/downloads/xptweaks.exe - 175Kb - Download - Screenshot

Stop-the-Pop-Up
Stop-the-Pop-Up is a pop-up blocker preventing all annoying pop-up windows from appearing as you surf the web. The popup stopper has full support for both pop-ups and pop-under ads and will kill them even before they appear on the screen. Each time a pop up is closed you will hear a cute sound... Messenger Service pop ups can spam you even when your web browser is closed. ... Stop-the-Pop-Up will also kill the new breed of pop-ups called 'Messenger Service spam'. ... The banner ads in ICQ pro 2003 and MSN Messenger 4.
http://www.bysoft.se/sureshot/stopthepop/stopthepop.zip - 977Kb - Download - Screenshot

Pop Up Blocker and Ad Killer for Kazaa
Tired of being hit by pop ups while you run your file sharing program? Pop Up Blocker and Ad Killer is designed to automatically detect and stop the popup windows that are opened by popular file sharing programs such as Kazaa, Kazaa Lite, Morpheus, Grokster, Xolox, iMesh and Direct Connect. ... Getting Messenger Service pop up spam? ... Messenger Service spam, also called WEBPOPUP, can pop up even when your browser is closed! ... Do not linger, Pop Up Blocker and Ad Killer will stop Messenger spam too.
http://www.bysoft.se/sureshot/pbdl/pusaksetup.exe - 977Kb - Download - Screenshot