I registered for both Furl and del.icio.us the only one I could get to work was the del.icio.us. I could only get del.icio.us to work. I did like all the colors on furl when I was trying to register. I saved Furl to my favorites and I could not get the button to move to the tool bar. I like how easy del.icio.us you just tag it and it is saved. It is not the prettiest looking, but it gets the job done. I really do think I am going to use it.