OK so I got one
Title of today's freesite: Amateur Interracial Lesbians - Of the 20 LLs I sub to, that title was too long for two of them. One I changed the title in the form to Amateur Interacial Lesbos (script auto-chopped the title), hopefully the reviewer will accept that as being close enough to the on-page title. The other stated no more than x amount of characters, but the sub went through with the original title so guessing that's a request rather than a set-in-stone rule.
A little thing, but enough to bug you when you have subbed to half the LLs and can't change the on page title