ISPs that are not able to turn over 150,000 personal identities per day face a fine of €1,500 per accused infringer.
The Internet providers will be tasked with identifying the alleged infringers' names, addresses, emails and phone numbers. If they fail to do so within 8 days they risk a fine of 1,500 euros per day for every unidentified IP-address.France Starts Reporting 'Millions' of File-Sharers
To put this into perspective, a United States judge ruled recently that the ISP Time Warner only has to give up 28 IP-addresses a month (< 1 per day) to copyright holders because of the immense workload the identifications would cause.
All the major French ISPs have to cooperate with the identification process, and the first 'victims' are expected to be disconnected or fined in a few months when they receive their third warning. At this point it is doubtful whether Hadopi will in fact decrease the piracy rate.
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.