In reply to Pylon King Against Capit@lism:
I find it quite useful when abroad, it doesn't take much new route action to move the 3rd line from the left to the 6th line from the left. It is great when visiting a newly developed crag without a guide to have the name and grade at the base of a route.
Would the world really stop turning if discreet markers were painted at the bottom of routes, particularly at some of our recently developed "quality" venues?
There have been numbers painted at Craig y Longridge for longer than I have been climbing, letters carved on Gimmer since the dawn of climbing