A story in The Guardian about Mumsnet in the UK. It is an online forum for mums which also lobbies for change. It is probably the largest online lobby group for women in the UK. This is an interview with its founder, Justine Roberts (whose husband is deputy editor of The Guardian). Mumsnet gets a million hits a day.
Nothing equivalent here, although Essential Baby and Bub Hub fill similar needs in some ways - mums helping mums - just not the political action.