Why Are Some Japanese Sites Japan Only?

As part of urban apartment life, I often help out neighbors with various computer problems. Eventually, I’ll probably buy this “no, I won’t fix your computer” t-shirt, but until then it lets me make friends of neighbors in an old fashioned/new technology sort of way.

Tonight, I helped out a Japanese student who found herself unable to access a variety of sites that she normally would, all of which were located in Japan. I headed to her apartment to check out the situation. When she would try to access the sites, she was met with a message that said use of the sites was only available from within Japan, but you could email them your IP to ask for access specifically for yourself. In other words, if you’re not in Japan then this site is not available to you.

Why would a site institute a policy like this? To save on bandwidth? Something seems terribly wrong when a site removes itself from the world part of the world wide web.