Social Media Marketers will be happy to know that Digg just launched a Firefox 3 plugin. You can download it here.

And the video of Kevin Rose talking about the launch:

I haven’t really tried it out yet. I installed it, but as usual I have about 23452523 Firefox tabs open waiting to be attended to, and I can’t use the plugin until I restart Firefox. But… I’ll give it a good go round in the upcoming week or so.In the meantime, let us know what you think.