Facebook's cleaning up your News Feed a little, ripping out Like-baiting posts, repeated content, and spammy links.
The improvement we are making today better detects these stories and helps ensure that they are not shown more prominently in News Feed than more relevant stories from friends and other Pages. This update will not impact Pages that are genuinely trying to encourage discussion among their fans, and focuses initially on Pages that frequently post explicitly asking for Likes, Comments and Shares.
On repeated content:
People and Pages on Facebook frequently reshare great content, but people tell us there are occasionally instances where photos or videos are uploaded to Facebook over and over again. We’ve found that people tend to find these instances of repeated content less relevant, and are more likely to complain about the Pages that frequently post them. We are improving News Feed to de-emphasize these Pages, and our early testing shows that this change causes people to hide 10% fewer stories from Pages overall.
On spammy links:
The update we are making today improves News Feed to reduce cases of these spammy links, and in our early testing we’ve seen a 5% increase in people on Facebook clicking on links that take them off of Facebook – this is a big increase in the context of News Feed and is a good sign that people are finding the remaining content in their News Feed more relevant and trustworthy.