There's always been a heavy SV startup scene slant to the user base here, especially around YC incubated companies. The politics have historically been a sort of hybrid Cyber Libertarian/California Progressivism. I sense the SV bias is fading away and also that the politics (tech focused and otherwise) have very much evolved from where they were in 2007. For example, I detect a conservative element here that Reddit has actively been trying to expunge. I think it's mainly a result of the moderation probably taking a more permissive approach and the US political climate getting ever more divisive. Plus, there just seems like there's less to talk about in the startup scene these days, mobile is now long in the tooth and much of the focus has shifted to maturing regulation.