You readers with existing SB Nation accounts probably see a "Facebook Connect" blurb at the top of the page today. The heading of this FanShot links to an explanation of what that's about: Essentially, you can now log in (and comment, and share) at Lighthouse Hockey and other SBN sites through your Facebook account.
You can "x" that blurb if you're not interested. But at any time you can connect your accounts through the blue "Connect" button on the title bar at the very very top of the page.
We now continue with our regular programming. Happy surfing, Islanders fans.