I think the title shows what the site is about. It is aimed at over 50s, and predominantly aimed at women. People say that others are welcome, but who is made welcome depends on who is posting, really. Also, we don't know who is posting. As we are anonymous, we could all be anyone. Personally, I don't mind in the least if men post, so long as they don't announce their maleness in every post and expect that it means that they should have the last word
, but others may feel differently.
The fact that we are predominantly women over 50 means that we can usually expect others to understand when we refer to things from our youth, and not expect people to write us off just because of our age, as definitely happens on MN. We are not all of the same mind, and have as many differences as similarities, but we share, on the whole, the fact that we are women and that we are over 50 (although that doesn't apply to all, and in any case takes in decades, as we have at least one centenarian in our number).
I'm not a gran, although I may be one day, and I don't think that matters. I have lots of friends with grandchildren, and brought up two children of my own, so they are not an alien concept. By no means all threads are about grandchildren anyway.
Given that Mumsnet is the main site, calling us Gransnet shows the link, and that we are, on the whole, older than the average MN poster.