You may have noticed some new Facebook buttons showing up around the site. I've set up some custom actions for Serpentine that you can use to share with your Facebook friends. You can share achievements you've earned and you can also share which rooms you're playing in. That way your Facebook friends can come directly into the room to play with you. I've also scattered some Like buttons around, and these are just general buttons you can use to rate your experience here. I hope these buttons aren't too invasive, let me know if they're giving you any trouble.
Also, if you haven't yet, please join the Serpentine Community on Facebook. It helps get the word out about Serpentine and gives us all a place to congregate outside of this site.