A paywall is a site that has a password protected page, a wall you cannot pass unless you have the password. It's a fence that just stops you in your tracks unless you have the key and if I had a paywall anything could be behind it. It's of course going to be something bad, something naughty, something that needs protecting from the public and there might not just be one. I could have multiple little paywall sites setup, and they are so easy to put up and pull down. Now imagine I made a personalized one just for you, a personalized paywall featuring you and all your photos.. One link and one password is all it takes to access it, I bet your wouldn't want that being shared! How much would you pay me to pull your paywall down pet?