Really a well written post, and thanks for stressing several times that these aren't really "rules" and in fact a lot of what makes a good photographer is how they push or break the rules in pursuit of interesting composition.

BTW I think you may have intended to put a different photo in, right above the "Negative Space - Framing Continued" header, the text above that photo (photo appears to be a bride and groom, outdoors in front of a lake) is: "In fact my most recent Wedding Photo of the Day was the shot below, where the bride and her father are framed not only by the incredible décor on either side of the aisle, but by the Perspex candle holders on the registrars desk which I was stood behind. " Clearly the photo below does not match that description.

Much love - Carl