// Standard example which works with your photostream but not a group
$('ul').jflickrfeed({
	limit: 2,
	qstrings: {
		id: '44802888@N04'
	},
	itemTemplate: '<li><img alt="{{title}}" src="{{image_s}}" /></li>'
});

// Make this addition and make sure you are using the groups ID and it will work
$('ul').jflickrfeed({
	limit: 2,
	qstrings: {
		id: '1727866@N21'
	},
	feedapi: 'groups_pool.gne',
	itemTemplate: '<li><img alt="{{title}}" src="{{image_s}}" /></li>'
});