Social networking is changing blogging. ...More of us are using Facebook and Twitter for casual sharing and personal updates. That has helped clarify the place of blogging as the medium for personal writing of a more substantial nature. Keeping a blog is more work than posting to Facebook and Twitter. So I wouldn’t be surprised if, long-term, the percentage of the population blogging plateaus or even declines.

Maybe we’ll end up with roughly ten percent of the online population (Pew’s consistent finding) keeping a blog. As the online population becomes closer to universal, that is an extraordinary thing: One in ten people writing in public. Our civilization has never seen anything like it.

So you can keep your “waning” headlines, and I’ll keep my amazement and enthusiasm.

Scott Esposito piggybacks on his argument. I've stayed off Facebook for obvious reasons.