http://www.fujicco.co.jp/recipe/detail.php?id=256

http://d.hatena.ne.jp/yohei-a/20101215/1292429813

Unicode Character 'REPLACEMENT CHARACTER' (U+FFFD) http://www.fileformat.info/info/unicode/char/0fffd/index.htm http://en.wikipedia.org/wiki/Specials_(Unicode_block)