public static function getAllProviders(){
	$result=array();
	/*
	Google https://www.google.com/accounts/o8/id
	Yahoo https://me.yahoo.com
	Flickr http://www.flickr.com/username
	AOL http://openid.aol.com/username
	Blogspot https://www.blogspot.com/
	LiveJournal http://username.livejournal.com/
	Wordpress https://username.wordpress.com/
	VerisignLabs https://pip.verisignlabs.com/
	MyOpenID https://www.myopenid.com/
	MyVidoop https://myvidoop.com/
	ClaimID https://claimid.com/username
	Technorati https://technorati.com/people/technorati/username/
	*/
	$result['google']=array('icon'=>'http://www.google.com/favicon.ico', 'label'=>'Google', 
		'login'=>'https://www.google.com/accounts/o8/id', 'logout'=>'https://www.google.com/accounts/Logout');
	$result['yahoo']=array('icon'=>'http://www.yahoo.com/favicon.ico', 'label'=>'Yahoo', 
		'login'=>'https://me.yahoo.com', 'logout'=>'https://login.yahoo.com/config/login?logout=1');
	return $result;
}