Now this is an idea that is worth learning about. I had heard about del.icio.us (I never realized that it had all those periods in it) but I wasn't really sure what it was about. I can see this site being useful for the very reasons that were explained. I liked being able to use it to share information that someone already found on a homework assignment. This seems to be a great way to save your time when someone has already begun the process. Then you could add your own information and you can help a patron in minutes when if you didn't have help from others would take much longer.
I think that I kind of understand the term folksonomy and how it is related to tagging. It seems to be another way to connect to people who share your interests and talents. I am going to look into this more so I really understand what it is and what it does.
The other explorations I had had some knowledge and experience with but this I will definitely have to look into social bookmarking sites more to understand them enough to be able to explain it to others.