Laura McKenna at Apartment 11D: The Blogosphere 2.0: How blogging has changed in the past six years.
4. Blogger Burn Out. Many of the top bloggers have been absorbed into some other professional enterprise or are burnt. It's a lot of work to blog. Most bloggers, and not just the A-listers, spend 3-5 hours every day blogging. That's hard to maintain, especially since there is no money in this. They used that time to not only write their posts and monitor their comment sections, but to read and foster other bloggers. Blogging survived based on the goodwill and generosity of others. It's probably no coincidence that every blogger that I've met face-to-face is an extraordinarily nice person. But it's hard to volunteer that much time over a long period of time. The spouses tend to get annoyed.
5. Reader burn out. You all are not clicking on the links like you used to. I'm not really sure why. In the past, if I was linked to by a big mega blogger, it meant 10,000 new readers in one afternoon. Now, a link by a mega blogger sends over a couple hundred readers. Readers are probably tired out of trying new stuff. Maybe we've sent you to too many crappy places over time and you're sick of it.