TinyChat’s browser-based, disposable chat rooms let you IM anyone, anywhere, at any time, free.
There’s no sign-up — just click to open up a new chat room with its own, unique URL, which you can then pass along to friends. (You no longer need to share the same IM client.) You can also sign in with your Twitter user name, and all your devoted followers will get a heads-up that a discussion is under way. When the page is closed, the URL and the chat room disappear.
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