Media Agenda: Carrie Longton, co-founder, Mumsnet

Carrie Longton talks to Media Week about the strength of the Mumsnet community, how its recent What Car partnership is a natural fit for the brand, and provides tips for all of those budding entrepreneurs looking to set up their own digital start-ups.

Speaking to Media Week's Mark Banham, Longton describes the tipping point that gave a voice to the community and the "Mumsnet election" of 2010.