Valleywag is specifically about insulting individuals involved with companies. TechCrunch focuses on breaking news, even when a good deal of the time it's crap, and CodingHorror might be uneducated but Jeff Atwood is still writing things that are relevant to this site. We don't need articles about Julia Allison and Tina Fey.

I think Valleywag is actually better-written than those other two. It just happens to be completely off-topic.