I would like to create a website that allows a bride and groom to create a "universal registry". ? They would list their wedding registry items on my site so that their guests can visit my site to see the entire registry in one place. ? This site would need to allow users to 1) add an item to the registry manually 2) allow users to browse other websites (such as [url removed, login to view] or [url removed, login to view]) and click a button to add the item to their universal registry (see the "how it works" page of [url removed, login to view]).