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Chatsum is a FREE add-on for your web browser that lets you chat with all the other Chatsum users that are looking at the same website as you. Chatsum lets you: * Chat live with other people who are looking at the same website as you! * Find out what other people think about the websites you're looking at! * Leave messages on any website you visit! * Read messages left on websites by other Chatsum users! * Browse the Chatsum community's favourite websites! * Hunt for treasure in our unique online treasure hunts! * Find people that like the same sites as you and then CHAT TO THEM!