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

Messenger Ad Blocker
Last time Windows users around the world began receive Windows popup messages appearing on their computers. This advertisement is the newest form of sending ads right to your desktop. Many advertises and spammers are using this privacy invading method of Advertisement. ... But now You can stop this Messenger SPAM-messages and protect your desktop with Atory Messenger Ad Blocker.
http://www.atory.com/download/messenger_ad_blocker.exe - 657Kb - Download - Screenshot

Pop up Blocker Pro
Pop up Blocker Pro is an aggressive pop-up blocker. The pop-up blocker has 4 types of pop-ups blocking: 100% pop-ups blocking, Pop-ups Block list, Pop-ups Block list with keywords, Limit windows opened. This is one program packed with advanced Privacy Protection Technologies (Prevent your home... With Pop up Blocker Pro you can surf the Web with complete peace-of-mind, knowing that Pop up Blocker Pro protects you from unwanted data becoming permanently hidden in your PC, without the possibility to recover it.
http://www.synergeticsoft.com/files/PBpro.exe - 657Kb - 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. ... Do not linger, Pop Up Blocker and Ad Killer will stop Messenger spam too. ... Getting Messenger Service pop up spam? ... Messenger Service spam, also called WEBPOPUP, can pop up even when your browser is closed!
http://www.bysoft.se/sureshot/pbdl/pusaksetup.exe - 977Kb - Download - Screenshot

Super Ad Blocker
Super Ad Blocker blocks all forms of advertising including Flash, Rich Media, fly-in, slide-in, pop-ups, pop-unders, spyware ads, messenger ads, and more! Blocks and removes thousands of major spyware/adware applications. Includes advanced privacy cleaning and automatic updates so the product... Super Ad Blocker provides detailed statistics for the number and type of ads blocked. ... Super Ad Blocker never interferes with e-mailing, banking, surfing, chatting or any other Internet experience! ... Play a fun sound when an ad is blocked to celebrate your victory!
http://www.superadblocker.com/downloads/SuperAdBlocker.exe - 5Mb - Download - Screenshot

EndTask Basic
The Basic edition of the End Task family includes the full featured Pop-up Blocker and a powerful Task Manager. Unlike other pop-up blockers, ours won't kill pop-up windows you want. Our blocker hides pop-ups and just shows information about them. With a simple mouse hover you can take a peek... It also blocks pop-ups that originate from Adware/Spyware and Windows Messenger Service. ... The Basic edition includes common features such as a "White list" and the classic "Instant-Blocker". ... With numerous tools to monitor and control the code running on your machine, you can fine-tune your...
http://www.endtaskpro.com/download/EndTaskBasic.exe - 1Mb - Download - Screenshot

Pop up Blocker
Pop Up Blocker has four types of pop-up blocking: 100 percent pop-up blocking, a block list, a block list with keywords, and a limit on the number of open windows. Pop up Blocker also blocks Flash Ads, Background sounds, Inline videos, JAVA Applets and Animated gif files. ... This program is packed with advanced privacy-protection technologies, which prevent your home page from being reset, protect your proxy settings, provide a sound effect upon closing pop-ups, disable auto suggesting, and block messenger-spam pop-up ads.
http://www.synergeticsoft.com/files/pb6.0.5.exe - 534Kb - Download - Screenshot

IP Messenger Spam Blocker
Simple one-click to complete protection against Messenger pop-up ads! IP Messenger Spam Blocker prevents IP messages from appearing on your machine. One click and your system is automatically protected. Direct IP messaging is the newest form of advertising spam. ... Block all IP Message Spam - Download IP Messenger Spam Blocker Invisible Browsing will also protect you by blocking ActiveX controls which can harbor malicious code such as viruses and invasive code such as JavaScript. ... Invisible Browsing allows you to connect your entire home or small office network to the same Internet...
http://www.amplusnet.com/setups/ipspamblocker.exe - 441Kb - Download - Screenshot

AbsoluteShield Internet Eraser Lite
AbsoluteShield Internet Eraser Lite contains a pop-up blocker and a privacy protector. It protects your privacy by cleaning up all the tracks of your Internet and computer activities. The tool is integrated with Internet Explorer and it can erase the browser history, cookies, typed URLs, recent... The pop-up blocker also blocks messenger service pop-up spam. ... The tool also has an integrated pop-up blocker which will block the unwanted pop-up and ad windows in Internet Explorer when you surf the Internet.
http://download.internet-track-eraser.com/download/eraser_lite.exe - 2Mb - Download - Screenshot

EndTask Free
The Free edition of the EndTask family is a unique pop-up blocker. Not long after you start browsing the internet, the term "pop-up" defines itself. You? re at a website and another window pops up out of nowhere. Pop-ups are usually annoying advertisements that waste a lot of your time while... Our unique blocking technology also works on pop-ups that come from adware or Windows Messenger Service. ... The "bad" pop-ups will automatically be closed after a few seconds (no more searching for that close box).
http://www.endtaskpro.com/download/EndTaskFree.exe - 1Mb - Download - Screenshot