On Wed, 16 Sep 2015 00:29:33 +0000, John Doe wrote:

DO NOT click on this link unless you have a bulletproof system like
mine.

http://windowsgotinfected.info/warning-info.htm

I think it's harmless, but it can mess up your browsing experience.
There are other URLs that produce the same silly looking virus warning.

I suspect it's a new thing. Apparently it's a hard-core sales tactic.

It's a web page with some text overlayed with another panel of text,
making it impossible to read the initial web page. Says something about
windows firewall and registry, which is strange since I didn't know Linux
Mint Cinnamon had such things.
You can't close the page or close the browser (google chrome), but a
quick switch to terminal mode, a ps command and a kill of chrome did the
trick.