We think reviews of software ought to be based on the real usage of the product. Watching a product demo is not the same as really using the product, hence we will disable any reviews that are determined to be based on watched product demos. A demo that has been viewed, however, is not treated the same way as testing a product out for free. A free trial does include getting your hands dirty. You may review a piece of software if you used it during a free trial period, but you must note this on the review form.