"of course Justine/MNHQ have an interest to attack as many people as possible to the site"
Unfortunate autocorrect there 
Although I do agree, it still makes me sad. Personally I found MN was much more 'fun' and supportive when it was more 'niche'
Was a time when I didn't know anyone that knew or used MN. It wasn't spoken about, no one admitted it and there were in-jokes and sideways smiles about wearing badges or carrying shopping bags with MarsLady's Lemon Drizzle Cake plastered all over.
MN changed when it became more noticeable, more mainstream. When people started linking threads to FB and The Daily Fail had the column "This Week On Mumsnet" - it wasn't niche any more and the community feel disappeared.
It got bigger, it got less friendly and this will continue...yeah it's capitalism, but it still makes me sad.