I hadn't heard of these http://www.prescriptiongolf.com/PutterGripOrder.aspx until Saturday when I saw one of my neighbors using one on his putter at our club. He's a scholarship college player who was home for the weekend and is the best putter I know. He said the grip has made his putting more intuitive, for what it's worth. When driving my daughter to school this morning I heard more about the company as Hank Haney was interviewing the founder of the company on his Sirius Radio show. Interesting concept and I'm certainly willing to try them out. I ordered a couple of their putter grips this morning and will report back next week.