Focus on language/locale targeting
I keep getting Google Chrome offers to translate the homepage from Japanese (or any other language) depending on what the selected content there is. That's annoying (and just poorly machine translates some user content).
Would probably be better to auto-detect language (actually: country, I think) from the browser, and then only show "same language" content to users. Would help in adoption in foreign markets, and there seems to be some interesting traction in Japan.