[Insert "WTF Facebook, why you make the News Feed worse" comment here.]
OK, you knew I couldn't NOT say anything: my complaint is that it now dredges previous, sometimes very old, posts and brings them to the top because someone new commented on them. I've already seen the thing four times, I really don't need or want to see it again. Someday a "black-hole post" will spring into existence and be at the top of my feed forever, squelching every other post made. And it will undoubtedly be some asinine image macro with some utterly vapid (but oh so earnest and heartfelt) pabalum on it. And it will link to Upworthy.