I'm not using my aggregator as much as I was a couple of months ago. Why? Because the blogs I'm reading frequently have changed : at the moment Arnold Kling, Phil Greenspun, Bill Seitz, Nathan Newman, Graham Lally and Crooked Timber. Next week I suspect the mix will be different.
My aggregator already has 20 feeds, mainly of people who I want to read, but who are temporarily off my radar. Somehow I need the special power of being able to dynamically vary the importance of different feeds.