The "Location" field in the user profile has been fixed today to accept non-english characters. This is a rather silly bug that has been there forever. Quite often new signups bump into this issue while trying to enter "México" or "München" for example, and would have to change the spelling to complete registration.

Long story short, if you were annoyed by that you can update the location in Account Settings > Edit Account.

The "Location" field is entirely optional. It is only seen on the "Who's Reviewing?" page. It's just nice to see where people are from. -- This fixes issue #141 on Github.