According to Microsoft, some of you actually like having adware on your system. The company’s free Malicious Software Removal Tool (MSRT) is currently installed on 450 million systems worldwide, and provides the Redmond giant with some interesting data.

But new statistics released by Microsoft would indicate that not all users are clamoring to uninstall adware programs, even if they’re flagged as somewhat suspicious by security software. Microsoft’s latest security data is particularly interesting because of the sheer number of machines that the company can electronically survey with one of its free security programs, the Malicious Software Removal Tool (MSRT).

Of the 129.5 million potentially unwanted programs detected by the MSRT, only 71.7 million were removed by users. Judging from this Information Week report, it’s not clear if the users actually “like” having spyware like WinFixer (3.4 million instances) on their systems, or if they’re just not tech savvy (or bright) enough to know it should be removed.