When Mary Jo Foley writes that Firefox will get support for Windows Cardspace, a number of bloggers will pick up on that (see also here and here).
Although choice is never a bad thing, there was a Firefox extension doing that already. The new one wraps the native CardSpace implementation on Windows so you can use it from Firefox as oposed to the one at xmldap.org that uses Java behind the scenes.
This has advantages and disadvantages. Anyone interested in this thread?