So what happens if after a few months some of the overclocked devices just die? We all know how hungry the gizmo sites are for big headlines (and clicks), even if there were just a dozen bricked N900s running @1050 MHz. So would it go like:
1) Intel and AMD and the mainboard manufacturers, where the blue smoke is always the user's fault - not hurting the manufacturer's brand.
2) Shocking news of burning Nokia smartphones, which is way too easy to overclock. Most people would probably read just the headlines, and that wouldn't be good for N900.

In my personal opinion, Nokia should actually be there first before anything happens, and put up an overclocking party. They should invite a few famous overclocking teams around the globe with 100 N900s to grill. That's when they could also tell the public audience not to overclock their devices, as it would possibly damage their smartphones. This would - however - promote N900 as the ultimate powertoy with no limits. It certainly would be something that no other phone manufacturer has ever done.