A Firefox add-on that allows you to create bookmarks with one click
Version: 0.4.1Adds a button (either on a toolbar or in the urlbar) that provides one click bookmarking/tagging. Clicking "Organize" from there allows adding other tags, changing the bookmark name, moving the bookmark, etc. etc.
Operating System: Mac OS X
The My Tagger extension is a functional tagging/one-click bookmarking prototype for Minefield.
Note: The My Tagger addon is cross-platform and it works on Mac OS X, Windows and Linux.