HTTP headers agree:
$ curl -I http://whytheluckystiff.net
HTTP/1.1 200 OK
Server: GitHub.com
Date: Sun, 06 Jan 2013 04:37:51 GMT
Content-Type: text/html
Content-Length: 109
Last-Modified: Wed, 19 Dec 2012 00:31:03 GMT
Connection: keep-alive
Expires: Mon, 07 Jan 2013 04:37:51 GMT
Cache-Control: max-age=86400
Accept-Ranges: bytes