Ping.fm Browser Plugin (With keyboard shortcuts) ??

I would really love it if there were a nice little browser plugin that would allow me to hit a single keyboard shortcut and update all of my social networking sites with a link to the page I'm on, and let me add a few works about it as well...

My desires are pretty small and simple for starters I guess, but I could certainly think up some other interesting / useful features for a product like that...