I have stumbled upon this nasty problem in setting up my referral 2.0. This may be a bug or this may be my lack of knowledge so please help me. This is the problem: I tried to set up my referral 2.0, and browsed around the products in each category. I found one which interested me and was given this message. "Need to select format to add product to cart." I tried to check one text block which I wanted to use but the "Add this Product to cart" button remained unclickable. When I tried to click the text and the banner format, the button became clickable but nothing happened when I click the "Add this Product to Cart" button. How do I choose individual ad format which I want to use (particularly text block) ? Another question: I notice that Google showed referrals available in: my country by default. Can I change it to another country ? My visitors are all from USA. Please answer this so that I can get started in promoting Referral 2.0 as soon as possible Thanks a lot !