Where has the use of "of" instead of "have" appeared from

We had a rare owld spat about that a couple of years back between The Snail, Don Firth and myself. Now where was that again?? If it comes to me I'll post a link!

Maybe I shouldn't be arguing for an open appreciation of cultural & linguistic dynamics on a old-fogey folk forum - though our senior critic MtheGM does a fine line in text-speak! But hell, even I remember a time when all round here was fields. Actually it's the opposite now; where now we have open fields & country parks we once had open-cast mining and power stations.