I thought I should do this as I still get the occasional email asking about the hack

• The original hack to see private profile’s albums no longer works as facebook have blocked up that hole. It was done using the photo_comments.php page
• This userscript allows you to see some of the pictures that people in your primary network are tagged in.  This does NOT show ALL their pictures, but it shows at least some.  Don’t listen to the people in the comments that says it doesn’t work; I use it and I can say it works great. (Don’t email me or the userscript’s creator about how to install it, just use google)
• The teaser trick still works.