I have been using del.icio.us - a social bookmarker - for a few months now, but have always found it easier to use ctrl+D in Mozilla Firefox; but no longer! Thanks to jonny baker I have now found an add-in to Mozilla (here) that means at a click of a mouse the website can be added to del.ico.us and the tags easily inserted.
Another of the hundreds of reasons why Mozilla Firefox is far superior to ie.
You can check out my del.icio.us links here. The great thing about del.icio.us is that others' tags can be accessed; so for example check all the Dooyeweerd tags here and all the neocalvinism tags here.