During a long-winded introduction, Facebook head Mark Zuckerberg explained the challenges in creating a truly correct algorithm for determining different social circles of close friends, co-workers, and others you interact with on Facebook. He also discussed a problem plaguing many Facebook users: the inability to truly restrict messages, photos, or updates to a smaller group of friends within your friend circle. Facebook's proposed solution: a new feature called Facebook Groups.
Groups is similar only in theory to Facebook's Friend Lists feature, which was only used by five percent of Facebook's users. Zuckerberg instead compared it to Facebook's photos feature, in which 95 percent of users are tagged in a photo, even though most people are tagged by others tagging them, not by tagging themselves. By implementing this "social solution," users are easily added to groups by others, and presumably the feature will be used by most of Facebook's users.
For more on the new Facebook Groups feature, keep reading.
Zuckerberg describes the new Groups feature as "a simple way to stay up to date with small groups of your friends and to share things with only them in a private space." The default setting is closed, which means that group posts, conversations, and events are limited solely to those group members, by default. You're also able to group chat with all online group members at once. Or, use the group as an email list to share things when you're not on Facebook.
Groups should begin rolling out to users shortly.