Considered a marketing toy at the beginning of the Internet, the e-commerce website has become an integrated part of the overall business plan and, in some cases, has grown into a larger business than the existing offline business. According to one report, the total turnover generated by affiliate networks in 2006 was $2.16 billion in the United Kingdom. Revenue was estimated at $1.35 billion in 2005.  MarketingSherpa`s research team estimated that in 2006, subsidiaries worldwide earned $6.5 billion in bonuses and commissions from a multitude of sources in the retail, personal finance, gambling, gambling, travel, telecommunications, education, publishing and leading generation of contextual advertising.  Affiliate agreements can be entered into by any type of business, from the individual entrepreneur to the business.