While I am (obviously) not so averse to pointlessness, I do kind of agree that this may not belong in the commuting forum, which is consistently concerned with improving safety, not bypassing safety. (It would fit great in Foo though...)

There is a traditional method for obtaining a lighter, better-ventilated helmet, which is to pay a lot of money for a lighter, better-ventilated helmet, without compromising safety. I haven't seen participants in this thread resonate with your desire for light/air with no concern for reduced safety.

That said, leisesturm, you can always unsubscribe to this thread. I see no evidence of copycats; just a bunch of curious gawkers who are tuned in on the off chance of seeing a train wreck.