Pretty cool, few minor things : 1) You might want to restrict your own domain, e.g http://gowatchtower.com/preview?url=http://gowatchtower.com/preview http://g

Pretty cool, few minor things : 1) You might want to restrict your own domain, e.g http://gowatchtower.com/preview?url=http://gowatchtower.com/preview http://gowatchtower.com/preview?url=http://gowatchtower.com/... 2) Will you be able to get around X-Frame-Options ? 3) The ability to save page on an anonymous account before signing up may probably help conversions?