Thing !3-Tagging, folksomonies, & social bookmarking in Del.icio.us

I signed on for a Delicious account. I use Firefox and added the add-0n buttons for Firefox. Everything looked fine. I then did the next step of importing my bookmarks into Delicious. It doubled everything on my toolbar. I ended up having to unstall all the add-ons. I need to find out to just install the add-0n buttons. I liked being able to tag different areas so if I just want to go to my copyright websites I just search for copyright. I believe this will come in very handy when I need to do research. Being able to communicate with others who have similiar topics can be a great resource.