In the okopipi irc room I was just given this URL: http://experts.microsoft.fr/default.aspx which displays that here: Since microsoft.fr gets redirected to microsoft.com/france I assume it's a real subdomain of them... maybe for some project. Furthermore I don't think Microsoft would pull a joke like that as this can seriously damage their image and trust in their security services. Due to all of that I assume this is real.
Its probably dns poisoning or some lark like that. I wouldn't trust a page like that. Or microsoft trying to reverse psychology publicity stunt!
it's real... check this out: http://p2pnet.net/story/9115 http://news.zdnet.com/2100-1009_22-6085589.html