Behind the veneer of snark, he's also a very smart commentator on the biz.
Techmeme River is one of my bookmarks for keeping a pulse on what's happening: http://techmeme.com/river
EDIT: Didn't mean to be off topic. Put another way, "If you really like Techmeme, don't miss Memeorandum for politics."
At the very least it seems like the clustering is algorithmic and "most" of the ranking.
Source: Too lazy to look up the 6 year old article that I kinda remember talking about this.
the river is a chronology http://www.techmeme.com/river