I try hard not to cover Facebook or social media topics here but this is a big one, Facebook announced they are going to be updating the news feed algorithm to show more content from your friends and less content from publishers and brand pages. Facebook wrote:
With this update, we will also prioritize posts that spark conversations and meaningful interactions between people. To do this, we will predict which posts you might want to interact with your friends about, and show these posts higher in feed. These are posts that inspire back-and-forth discussion in the comments and posts that you might want to share and react to – whether that’s a post from a friend seeking advice, a friend asking for recommendations for a trip, or a news article or video prompting lots of discussion.
Facebook told these publishers and brands that they "may see their reach, video watch time and referral traffic decrease" as these updates are rolled out.
There is a huge amount of coverage on this that you can find on Techmeme.
Here is Mark Zuckerberg's announcement on this:
Forum discussion at WebmasterWorld.