Irritating?

Sir, - Listen out for a trendy newspeak habit which, I believe, we have imported from... America (?).

Sir, - Listen out for a trendy newspeak habit which, I believe, we have imported from . . . America (?).

It involves putting an interrogative inflection on the last word in a sentence even though no question is implied within the . . . sentence (?). The habit is in its infancy but becoming more . . . widespread (?). Personally, I find it . . . irritating (?). - Yours, etc.,

Strand Road, Sutton, Dublin 13.