A Japanese TV station showed a report on the people who live in a cyber cafe in Japn last year, and immediately the expression became known to the Japanese.
Net cafe refugees are the young workers who are not able to pay their rent any longer and forced to live in a cyber cafe.
It is relatively cheap to sleep over at a cyber cafe in Japan, and some of the cafes even have shower facilities. (See Sleep in a Net cafe)
The strange thing is that we hardly encounter a man who really live in a cyber cafe in Japan.
Some Japanese believe that the story is an absolute invention by the Japanese media.
It is sensational enough to sell their stories.
The truth still remains to be seen.