A bookmarking plugin which is installed by the website owners. So instead of users having a extension button in their browser, the website will have the option bookmarking. This plugin is provided by a website, which just asks the end user to create a one time account. Then the end user can bookmark from any website that has that plugin installed.

Advantage: End user will not have to install anything. Cloud based bookmarking. Advantage for the website owner: Their link circulating because the website that provides this plugin has internal networking.