Plurkybar is “an immensely simple Plurk sidebar for Firefox.” Just download it and you’ll be able to plurk within Firefox without having to have a dedicated window or tab. It automatically refreshes every minute so that you’re assured that you get the hottest, freshest, latest plurks available in your timeline.
Here's what it looks like on my Mac OSX 10.5.5. (see photo below)
If you like what you see, you can download Plurkybar 0.1 now at his site. He's also asking for your feedback, comments and/or suggestions. Go land on his site, and see what Plurkybar is all about! :D Enjoy plurking!