Want to download an album by a multi-millionaire recording artist? Think again, the British Government may have you away in the night (or strangle your broadband speed!). How dare you snatch food from Madonna's poor kid's hungry mouths.The ground-breaking fightback against online piracy will begin with service providers sending letters to thousands of the most prolific downloaders, telling them their activity has been detected and is being monitored.But the six biggest internet service providers — BT, Virgin Media, Orange, Tiscali, BSkyB and Carphone Warehouse — have signed up to a government drive addressing unlawful file-sharing.