The document summarizes affiliate marketing trends in the UK market in February 2010. It discusses that the UK affiliate market was worth £3.82 billion in 2008 and projected to cross £4 billion in 2009. It then outlines how affiliate marketing works by having third parties advertise products and services in return for commission. Finally, it discusses the client perspective on why an affiliate marketing strategy is beneficial by allowing companies to drive revenue, expand reach with limited budgets, and complement other marketing activities.