A name change has been suggested before, Grandad I suspect that changing the name of a site with such a large net presence would prove both extensive and expensive. All the work of establishing a brand awareness and altering all mentions of the organisation everywhere, on the site and otside it, could be too much for the admin team. I get the impression that it is quite a small team, and "Tech" seems to find it difficult even to keep up, without starting wholesale revamping.
I have tried to recruit male friends, but as soon as you mention grandparents (not even grandmothers, the reaction is "I don't want to read people boasting about their grandchildren all day"
Perhaps what is really needed is a campaign to demonstrate that members talk about ALL subjects, not just grandchildren? Geraldine ( who founded the site) was very good at that. Perhaps, also, a campaign to show that even grandmothers don't all react like "old women" to robust discussion of serious subjects?