Just fell upon the fact that Hotmail accounts (Outlook.com too) pick up the main profile image from Facebook for the email address associated with that Facebook account.
As you add more email addresses to the primary email in the Facebook account, so the profile image is shown for those email addresses too. No idea how many you can add, I have 6 to date.
So everytime I change your marketing message, I will now change my profile image too with a slightly different take on what it says or does. Its not huge, but ought to be able to carry a good message.
