You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract 10 Startups to Watch: Percolate A Twitter and RSS-filtering Formula Serves up an Automatic Content Brew That's Customized to Consumer Needs By Jason Del Rey, Published on September 19, 2011 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.