Yup, I've noticed a slight difference can come in, usually the image height will be a lil different in line with text, so I'd say there likely is a slight difference in width or height of words typed and appears in preview to the actual post.<br/><br/>As a test the above paragraph in preview has a last line with 'preview to the actual post' in it. I mean, I could actually measure any difference with my tape measure, though we're likely talking increments of mms built up over words...<br/><br/>EDIT: So there you go, more words appear in the actual post in that second line. So words are slightly smaller in width than the preview box.