Microsoft Tricks 0
Microsoft pushes an add-on to Firefox without asking permission.
Susabelle describes it.
This particular add-on is not something you want to have installed, in my opinion. Upon installation, it provides a ClickOnce capability that pretty much lets Microsoft do what it wants when it comes to your browser, as well as opening you up to all kinds of other nasties out there, since we all know the .net Framework is riddled with bugs that are not always fixed as quickly as they should be. The biggest security flaw with the ClickOnce install is that it allows easy installation of malicious software from websites, without your permission and knowledge.
Follow the link for more information and to find out how to remove this thing.
Aside: If regular readers wonder why I contemn Microsoft so much, this pretty much illustrates why.