It is said a scorned woman has more fury than hell itself - and now they can share that online.
Lulu, a mobile app that allows women to rank men they know or have dated, is about to be moved from London to New York, after clocking up growth in usage of 600% in the past six months.
The app uses a series of multiple choice questions to build up a ranking for men, which is then displayed on his Facebook page for women using Lulu to see.