Well Facebook uses "My Profile" etc. I guess they may know a thing or two about this, by looking at the number of their users. Gmail uses none, just "Contacts"

Well Facebook uses "My Profile" etc. I guess they may know a thing or two about this, by looking at the number of their users. Gmail uses none, just "Contacts", "Inbox" etc. Twitter uses "Create your account" but when signed in turns into non possesive nouns. I guess using possesives while calling to an action is an efficent practice.