People can change their names now, but with those that run Gransnet authorising it and being aware of it.
If people can just come in and change their name themselves an unlimited number of times without others being aware of their previous name, I think there is a danger it would allow people who are employees of a particular organisation or political party to use the site to push their message without others being aware of what is happening.
I wonder if it is possible, as BlueBelle suggests, to have a forum which can be accessed only by members of Gransnet, so that people can discuss personal issues without the whole world having access to it.