There is also an easier version now, and it can be used in conjuction with "memories".

By adding "tags" to the entries, you can call up a page with all entries using that tag.

F'rinstance, by going to http://mle292.livejournal.com/tag/library
you will find various posts that I have made about things I've found at the library.

More information is at http://www.livejournal.com/support/faqbrowse.bml?faqid=226