Yes, it's a site for parents. The clue is in the tag line "by parents for parents"
It's called mumsnet because when the two mums set it up from their kitchen, they were reaching out to other mums and that's what they decided to call it. They didn't think it would turn out to be this huge thing!
So now it's grown, changed and it's so much more.
But it's a bit late (and daft) to change a well known brand name. It really knocks the brand. People don't like it.
jif - cif
marathon - snickers
opal fruits - starburst
A brand takes a while to recover from a namechange!
But - is it even for parents any more? There's nannies, childminders, teachers, and other people whose careers are children.
Then there's the people who want to have children.
Then there's the people who don't have children and don't want children but like the site.
What's in a name?
PeopleNet and NetPeople, we'd end up with.
and they're just stupid names.