It is the accepted norm for most Mothers to stop Mumsnetting at around the same time, 6-7pm. Many others like to carry on until slightly later, 10 or 11pm.
But, there is a group of Extended Mumsnetters who don't conform to society's normal guidelines for internet usage and go far beyond the recommended 12am shut-off, Mumsnetting up to the time of 3, 4, even 8am.
Whilst most mothers would balk at such extended internet use, claiming their computer was primarily designed for their husband, these Extended Mumsnetters say it carries benefits.
"After 1am, you get the drunks coming back from the pub," says one EM, who admits she has Mumsnetted well past dawn. "They type a bit dodgily, but often you can get them to admit embarrassing stuff without name-changing."
Then there are the Tandem Mumsnetters, who have two screens open simultaneously so they can refresh threads faster.
The World Health Organisation recommends every mother Mumsnets if at all possible, and supports the local Internet Cafes that help new Mumsnetters overcome problems logging on. But there are some groups of people who believe Extended Mumsnetters are weird. "I tried to Mumsnet when I had a baby, but it was so tricky at first," says one vehement opposer. "In the end I gave up and read the Daily Mail. My kids are thriving."