Revenue Magazine reported that network-driven affiliate marketing will reach $1 billion in 2004 in the UK. Twice as lucrative as the previous year. Tradedoubler, one of the UK's largest affiliate networks, reported 54% growth just from February to March with sales up 328% over the same point in 2004. This makes Tradedoubler one of the fastest-growing affiliate networks. The magazine goes on to report that affiliate marketing will account for up to 3.5% of Brittish e-commerce this year and up to 20% for some merchants.