Easier means to bookmark and tag a website using the browser Add-Ons

Add an easy way to just bookmark (and tag in the same process) a site using some kind of accelerator.

The process would be:

The user is reading some site and decides to save the website to his BibSonomy account. By pressing some kind of shortcut a small input box appears and he's able to tag that bookmark. The bookmark is stored and the user can continue to further browse for information.