Peter Francis-Macrae, 23, a UK resident who was labelled as the biggest spammer, was sentenced to six years imprisonment this week, after having charged with nine different offences which included fraudulent trading, attempted blackmail and making threats to kill. Fraudulent trading charges related to the Domain Registry Services scam in 2004 which involved sending fake invoices to .uk domain name holders, advising that the registrant could lose its domain name unless the invoice was paid.