is arin the problem here? or are 'lazy'/'dumb'/'mistaken'/'poorly informed' admins the problem? Lazy/misguided/ex admins / downsized networks are the problem.
if aol is not worried enough to tell us an address to ping, perhaps you can see why we prospective pingers are not getting our undies in a knot. and, to carry it a step further, one might then infer why arin has not seen it as a priority. i suspect this discussion will change the latter. dunno what will change the former.
ARIN is in a unique position to be able to do something to at least try to mitigate the problem without too much effort before handing "damaged IP space" out to members.
damaged? so you will do your bit to undamage unused ip space by not bogon filtering on your network? randy