I use all the aggregators now, and they are evolving fast, and more are appearing every day.
Memorandum and its techie relative
Techmeme.
Reddit, only useful with politics turned off, a user pref.
Digg, which many ppl like.
And of course
Fark is the perfect news and not-news aggregator. I prefer the not-news there, but they will offer the perfect wise-ass comic headline for any event.