Urban legend? You're seriously insinuating that *more* than a miniscule percentage of /.ers *don't* understand the very basics of cellular telephony?
What does everyone who believes in this "urban legend" think is actually the case, then? That cell networks are completely peer-to-peer and all those towers are just high-amplitude repeaters?
I mean, even if that were the case, the phones would automatically decrease tx/rx power when they came within close proximity of each other, just as your phone uses less power when closer to a tower.