Automatic jump to http

From this page, I was trying to follow the "Home Page" link and I just learned two more trivial facts:

1. If you type in a word into Firefox's address bar (or a domain name it can't find, it does a google search and redirects to the first result.
2. The first result for "http" is Microsoft's web site. Try it here

Why would microsoft.com be #1 for "http"? Why would any site be near the top other than sites which define the technical details of the hypertext transfer protocol (such as W3.org -- the fourth hit in the "http" search)?