Paul Krugman handles this by using certain keywords in the title. In particular: personal trivial wonkish music All other blog posts fall into the middle z

Paul Krugman handles this by using certain keywords in the title. In particular: personal trivial wonkish music All other blog posts fall into the middle zone that he generally aims for. But the very technical stuff he marks "wonkish" and the personal stuff is "trivial". He does one music post every Friday, which he marks "music".