I'd like to blacklist about half of these domains. Some people might find Techcrunch, *.blogspot.com, AppleInsider, et al worthwhile, but I just don't care for them.

blacklisting *.blogspot.com would really be pushing it.

Indeed. Steve Yegge? Paul Buchheit? not to mention any of google's blogs.

Living in CN where *.blogspot.com is blacklisted, it's really, really troublesome. You'd be surprised how much knowledge and opinion is stored there even if it's frequently a little obnoxious.