Do you mean not useful in that people will not be able to open it or won't know the title? Current versions of Windows (in Wordpad in 7+) and Office (especiall

Do you mean not useful in that people will not be able to open it or won't know the title? Current versions of Windows (in Wordpad in 7+) and Office (especially in 2013, but with limited support in earlier versions) can open ODF.