This message is not on the main topics of this blog. There have been periodical accesses to this blog by the owners of the blogs which are introducing to the adult sites. I have informed to the Rakuten company about these unwanted usage of the system. I wish more improvement of these kinds of social networking services especially by Japanese people. Most social networking services are for profit, many women are working for their incomes in Japan as a part time jobs. Such aspects seem to be worse than namely developing countries. The social networking systems in most developed countries seem to work more effective and smartly than those in Japan.