Quote Originally Posted by Sonya Heaney View Post
S'S is incorrect in British and Commonwealth English, so S' doesn't look "terrible" to me; it looks right. When the Bridget Jones' Diary movie came out there was a big uproar in the UK (I was living in London at the time) because the posters were done in American style: "Bridget Jones's Diary".

It depends what country you're looking to get published in. I actually redid an entire manuscript's grammar/quotation marks etc. when I sent it to two different countries!
My UK publisher changed my S's to S'Ss. I suppose it depends which style guide they use!