One tries to be a responsible citizen and report malicious behavior to the “appropriate authorities.”  Of course, in the end, it’s really about filling out forms and being told to go fuck yourself.

After filling out their forms, they said:

The Microsoft Malware Protection Center (MMPC) strives to keep you informed about the status of your submission.
This email communicates what we currently know about the file(s) you submitted. You can view your submission online at http://www.microsoft.com/security/portal/Submission/SubmissionHistory.aspx?SubmissionId=8BFC675F-4A99-441A-BC8A-A7FB38ECC755
This information is subject to change pending our analysis and a final email response will be sent to you when analysis is complete and definition updates have been published.
If you were to scan the files you submitted using one of Microsoft's Antimalware products such as Microsoft Forefront Client Security or Microsoft Security Essentials, you would see relevant detection information similar to what is displayed below.
Submitted Files
=============================================
YouTubeDownloaderSetup33.exe [Not Malware]

…Sales spiel on various security products follows ….

To whit I replied:

So what would you call an application that hijacks users search engine's
preferences without authorization? Even after resetting my preferences, the
app re-modified them.
Also, your prompt about "preventing other application from changing default
search providers" is being circumvented by it.
I call that malware. I call it doing things to my computer I did not allow
it to. Give me a break!!!
Do a search for searchsettings.exe and notice how others think the same:
http://www.bing.com/search?setmkt=en-US&q=searchsettings.exe
Also, being a security minded site, you might also want to serve your
JavaScript files from https as well.

And then the kicker:

Analysis of the file(s) in Submission ID MMPC11100672957095 is now complete.
This is the final email that you will receive regarding this submission.
The Microsoft Malware Protection Center (MMPC) has investigated the following file(s) which we received on 10/6/2011 12:43:04 AM Pacific Time.
Below is the determination for your submission.
========
Submission ID MMPC11100672957095
Submitted Files
=============================================
YouTubeDownloaderSetup33.exe [Not Malware]