You must be registered for see images
Microsofts share option has the same symbol as Madara's original Mangekyou sharingan. Also Madara and Microsoft both start with M. Coincidence? I think not? Furthermore Madara wants to share with the world and the share option allows you to share with the world (in theory) as well. Think what you want, but I know that Madara has to exist in real life.