Calling all pedants who care to pass a verdict - am i mumsneting or mumsnetting?

[gigglewitch]

I typed the latter, went back and erased a 't', then put it back in again.
Just thought I'd start a fight thread
And don't you dare say that "mumsnet" should not use the gerund

double t for sure!

A double t imo but pedants probably hate me as I am rubbish at such things