My friend, it's got to do with the get-up. You see Palestinian scarves (keffiyeh) come in three colours: red and white, black and white and green and white.
Red and white scarves are worn by Palestinian communists. Black and white scarves by supporters of Fatah (the party Arafat used to run), but the green and white scarves, well... You see they are worn by supporters of (the Islamic group) Hamas. So if there are any CIA or Mossad agents out there they will think that you are a member of the Martian wing of Hamas come to lend supprt to the struggle of the Palestinian people against their Israeli opressors. Before you know it they will have put into effect a tactical strike against terrorist training camps for Martian Hamas supporters and drop a few hundred nukes on Mars. The debris produced by the nukes will be catapulted through space (since Mars has a very thin atmosphere) hurtling towards earth and will bring about its destruction on 12th of December 2012 at 12.12am. That means that you will be personally responsible for the complete destruction of the planet earth and will have to spend a few million eternities in hell being force fed matza balls, gefilte fish, chopped liver and chicken soup to exploding point.
I mean, really, are you willing to risk all that?
The secret it out - I am a secret agent of Humus, under the command of the Mekon of Mekonta, currently also hiding in the form of Kermit the Frog.
If you use a picture of your 'real' self, is in an avatar at all, I wonder?
I know, for example, that your own pic is actually of the love child of Aphrodite as fathered by Vangelis Papathanassiou. You have to deny it, I know, but the resemblance is clear.
An avatar is a manifestation of a deity or person - being both, I'm safe, but I'm not sure about the rest of you.........