Marketers are on paceto to spend more than $2 billion on affiliate marketing this year, according toJupiterResearch. That marks a 15% increase from a year ago. Affiliatemarketing’s growth has been spurred by its sales-generating performance andminimal initial investment. In fact, online affiliate marketing spending willreach $3.3 billion by 2012, the report predicts. The rise of blogging,interactive online communities and other new technologies are helping to driveaffiliate marketing’s growth, experts say.