Well I thought that today after the announcement about premium mn if the free version becomes too annoying to use or gets full of advertisements etc
My conclusion though was well I did fine before i discovered mumsnet and I'm sure after I would eventually find another site or another site would pop up because if I feel like that then others would too an lots of people would move away from here so someone would cash in on it and set up a site to catch those people because that's how things work.