Without wanting to re-open that particular can of worms, is there much point in keeping those grid refs hidden when they are easily obtainable on the internet anyway?
From memory, last time it was discussed there were a few folks who said they'd feel better if we didn't put the grid refs on here, as at least we'd know that if owt happened to the Polisher, the perpetrator couldn't've got the ref from here - even if they could find it elsewhere.