Thanks for this.
One thing I always tell clients, and it has yet to fail me, is that Microsoft never uses a URL that doesn't include "microsoft" somewhere in it. I don't care what it is, if you think you're at a Microsoft webpage and the word "microsoft" is nowhere to be found in the URL, you aren't in a Microsoft webpage.
The same holds true, generally speaking, for most major companies. They take branding very, very seriously and part of that is their web addresses.