Observation: the Daypop Top 40 and MetaFilter cover a lot of the same things.

This might seem obvious to you. Still, it really came home to me yesterday. I checked out MeFi after a pretty long hiatus and clicked through on only one link on the whole front page. I'd seen most of them that I was interested in on Daypop, and in more condensed form.

If you're interested in this whole MetaFilter thing, Steven has a long post about the clustering of weblogs. Then discussion broke out on MeFi.

As for me, I was part of the 1142 cluster for a while. I still link to those folks, but I couldn't hang with the pace of interaction over there.