Today we’re announcing a tool to make it easier to add friends to your Acquaintances list. When you add friends to your Acquaintances list they won’t be unfriended or notified. You’ll just see fewer of their posts in news feed. To try the new tool, go to your Friends page, select the Acquaintances list and click See All Suggestions.
More friend categorization and control over what you see from them, just like Google +. Anyway, it’s a cool feature, there are some people who over-share and it’s a good way to control your feed so it doesn’t get cluttered with silly stuff.