I like these guidelines from another site, of course, its because I’m bad at spelling and grammar.
http://theconservativetreehouse.com/2015/01/09/guidelines-for-comments/
7.) SPELLING AND PUNCTUATION – This is not school and we do not demerit for poor spelling, nor do we allow anyone to call others out for the same. However, if your construct is too poorly written the context is lost and important details can be missed.