yes, the 'sent it to henry and i' etc drives me wild; NO ONE will say 'me' at any cost. but IS saying 'myself' a way of sounding posher?? i would not have thought so; again, i attributed it to avoidance of the 'i'/'me' conundrum...in this case, remove 'suzanne' and one is left with 'myself posted'...but again, no offence intended! it is the common spoken language in the uk.
yes, we do know the difference between adverbs and adjectives of course which is why apple or whoever misstate it on purpose - sort of like 'every little helps'. continuing on the grammar theme - and remember, the uk is the home of that popular little grammar book 'eats shoots and leaves' - you guys can't decide if you are going to continue to use the apostrophe or not; it changes from building to building, street to street. - no wonder the french screw that up so badly!! the other thing brits seem not to use any more is the semi-colon, substituting the comma. i used to tell my students that punctuation is free ;)! - and speaking of the above book, in the usa all book titles are underlined; as this is not the case in the uk it is often hard to see where the title begins and ends...this must be a fairly new change, no?
speaking of adjectives/adverbs, many people also get wrong 'i feel badly' which should be, of course, 'i feel bad'. the former refers to the ability of people to feel; the latter, HOW they feel, eg, well or ill...