As you might have heard, I'm in Greece. And I went to post a blog just now, but the overenthusiastic engineers at Google made sure I got all my Blogger controls in... Greek.
I get how this would be a good thing to do for new accounts, but you'd think they could put in a feature to detect the language your posts are in (given that Google Translate already does that) or even just not switch at all once you've made a post or two. If you can get past that point, you can probably read enough of the local language to switch manually if you want to.
This kind of thing is a fun game when I'm in, say, France. It's a bit beyond my level when it's, like, all Greek to me.