So, reading around the internets today with the new PC 2.0 on the membrane, it occurred to me (as I passed through Kevin Drum, Andrew Sullivan, Balloon Juice, and the other usual suspects) that to be a professional blogger today you basically have to be willing to say almost exactly the same thing as everyone else for some significant percentage of the time. And then for some of the time you have to say something different, or say something about different things. And the reason people read your blog is because, (a) they know they’re going to get comments on the big issues of the day (in politics, today, the Pennsylvania Voter ID decision), and (b) they will also get some other stuff that is unique to you, more or less.

I don’t think it was like this years ago. That is, I feel like there was much more differentiation among bloggers of a certain type (politics) than there is now, and that one of the effects of the professionalization of blogging has been to push everyone towards more similar content, with minor differences that in the long run don’t amount to too much.

On that same subject this Rohin Dahr piece on the mattress industry is getting a lot of play. Here’s the block quote featured by both Drum and Sullivan:

The top four companies (Sealy, Serta, Simmons, and Tempur-Pedic) make up 59% of the industry revenue. The top fifteen mattress companies make up a whopping 81% of the market. Low levels of competition lead to consumers paying obscenely high prices for mattresses.

As Drum points out, this structure doesn’t seem that surprising in a mature industry. Perhaps that’s why blogging is starting to look like it.