get avatars from gravatar, facebook, twitter

gistfile1.aw

function getPhotoFacebook( $fb_id ){
	return 'http://graph.facebook.com/' . $fb_id . '/picture';
}

function getPhotoGravatar( $email ){
	return 'http://www.gravatar.com/avatar/' . md5( $email ) . '?s=50';
}

function getPhotoTwitter( $nick ){
	return 'http://api.twitter.com/1/users/profile_image/' . $nick . '.json';
}