I agree, keeping track of the attacks would not be very useful nor helpful. I bet if more ISP's would implement egress filtering on their border routers, it'd help quite a bit. Of course, egress filters don't solve the issue. But considering most script kiddies' intelligence level is limited, it will help at least a bit. :-) The problem with egress filtering is that it's mostly applicable at the end tier2+ level, not at the backbones, which means a lot of ISP's who are oblivious on what it is (or some cases where egress filter breaks their network setup).Normally that's not very productive as they are mostly owned boxes that will be rebuilt and reowned in days :(
-hc