Recently, I've begun to write the odd Twit in Portuguese and Spanish. A useful tool that has come out to let me do this a little quicker and with less grammatical errors is Twinsalator. This could be a helpful tool when braodcasting to candidates that you are seeking to hire from other nationalities.
While you could (roughly) translate your Tweets by pasting them into Google Translate, new service Twinslator wants to make it even easier, allowing you to write a tweet, translate it into another language and (optionally) post both messages.