it's time to post the Unicode FAQ entry on U+034F COMBINING GRAPHEME JOINER again http://www.unicode.org/faq/char_combmark.html#16 …pic.twitter.com/ut4CVuxBn1
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
OK, there is another, but it's even more of a hack: in-band collation override for foreign words.
That one's awful too because you end up with data littered with invisible chars that make it compare != to its normal spelling.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.