The document analyzes growth trends in different affiliate publisher categories from 2015. It finds that coupon publishers saw 45% growth led by GoodSearch at over 100% growth. Cashback/loyalty publishers saw 33% growth led by eBates at 80% growth. Comparison shopping saw 5% growth with Pricegrabber up 35% and Nextag down 33%. Discovery publishers like Polyvore, Wanelo, and Lyst saw strong user and revenue growth between 20-44% despite raising significant funding. Other companies to watch include Ibotta focusing on consumer packaged goods and Jet expanding beyond its core shopping site.