Microsoft Security Essentials free protection forever

i found this new ant-virus scaner program. microsoft made they say it going to be free forever. This might make other ant-virus company lose business microsoft give out free ant-virus

http://www.microsoft.com/security_essentials/
About Microsoft Security Essentials

Microsoft Security Essentials provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

Microsoft Security Essentials is a free* download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by the latest technology. It’s easy to tell if your PC is secure — when you’re green, you’re good. It’s that simple.

Microsoft Security Essentials runs quietly and efficiently in the background so that you are free to use your Windows-based PC the way you want—without interruptions or long computer wait times.

Learn more at the Microsoft Malware Protection Center

This has been around for a while. It's the successor to Microsoft's failed anti-virus package OneCare, and both of them don't perform particularly well in tests.

Skip it.

I am using this.

It detected some trojans in my MSN prog (sending ads to my contacts) which AVG couldn't.

MSE is actually the best Antivirus ever.

I'm using MSE too. Thing is, your OS has to be genuine, or else MSE will detect that you're using pirated Windows.