An articulate blog post on why Facebook is on the decline (or why you should consider it to be so):

While the social network is in a way similar to real world associations, the way sharing works on Facebook is completely disconnected from reality. In the real world, you don’t have information that you need to share with every single person you know.

But that’s how it works on Facebook, unless you jump through hoops to make lists and share selectively.

I don’t agree that Facebook gets worse the more you use it (on the contrary), but I think this this observation is astute (but sad):

The way Facebook advertising works, it bumps the spamming potential of a ‘Like’ up a notch. A ‘Like’ on a product or service will make a paid story visible not just to the person who liked it, but also to their friends.

Inevitably, there is an entire industry working non-stop creating low quality, emotionally appealing content that gets ‘likes’ from gullible users.