As the Wise man said...

Currently you can
	access comments
	access content
	access digg stories
	access news feeds
	download audio
	play audio
	search content
	use original size
	view original images
When you register as a member you can also
	access site-wide contact form
	create bio content
	delete privatemsg
	post comments
	read privatemsg
	reply only privatemsg
	select different theme
	vote on polls