Vrikodhara's script gets a line separated list of usernames which are friends of a user from the URL
http://www.livejournal.com/misc/fdata.bml?user=$usernameand then goes on to display all the pictures of each of the friends by accessing the URL
http://www.livejournal.com/allpics.bml?user=$friend_usernamefor each friend, and parsing the returned page.
Neat stuff! All webapps should be programmer friendly!