While well-intentioned, this phishing-like technique seems at the very least a disingenuous method of getting people to switch. I think there are other ie-update js floating around that get the point across without having to masquerade.
I had the same feeling. I work on computers that are infested with spyware from silly things like this. Not to suggest that this is a bad thing, but it's misleading, and might lead users to learn a bad habit.
Another month, another lets try and kill ie6. Reminds me of the mass attempts that were made to try and get everyone to ie6 in the first place.