Engineers invent cool toys, banks finance their mass production, telecoms market them ingeniously. And what does mankind go out and do with them?

"Pornography fans are feeding a surge in demand for movie downloads in Japan, home to the world’s first third-generation wireless network," writes Bloomberg here.

"Tokyo-based mobile carriers DoCoMo and KDDI Corp. say they’ve been forced to impose limits on the heaviest users as the $74 billion network feels the strain... Softbank Corp., the third-largest network and the Japanese operator of Apple Inc.’s iPhone service, said it is also considering restrictions on users with unlimited data plans." Didn't Comcast get in trouble for trying to do that quietly on the Web not long ago, in similar circumstances?

"Japan’s top two pornography providers, Hokuto and Soft on Demand Co., said sales to mobile phone users are driving revenue growth." But phone users "have complained about stoppages or slow Web access, mainly around midnight when traffic from “heavy users” spikes... While music downloads are the 'official big earner' in Japanese mobile commerce, more money is made through porn, dating sites and even fortune-telling services...

"Whenever there is a new distribution method for adult content, adult content will go that medium," Juniper Research principal analyst Winston Holden told Bloomberg. "It’s gone that way since cavemen drew adult pictures in the cave."