http://www.e-consultancy.com/publications/affiliate-marketing-survey-report-2008/ This research, produced by E-consultancy and sponsored by specialist affiliate marketing agency R.O.EYE, is based on a survey of more than 250 merchants and 150 agencies carried out in July 2008. The report, which compares many of the findings with similar research carried out in 2007, shows that Affiliate Marketing is still a very cost effective channel for merchants. However, it also reveals that budgets invested in affiliate activity and the average proportion of online sales derived from this channel have decreased over the last 12 months. The report findings are divided into the following sections: -) Budget and Sales -) Resourcing, Agencies and Networks -) Effectiveness and Measurement -) Issues, Challenges and Trends