Remy Sharp took the pastebin concept a step further in the form of “JS Bin,” which’s designed to help JavaScript and CSS folk test snippets of code, within some context, and debug the code collaboratively. JS Bin is a form of paste bin, that allows you to edit and test JavaScript. It also allows you to include the HTML and CSS to provide context to your pasty. It means you can actually run the JavaScript and once you're happy you can save, and send the URL to a peer for review or help.

More info: JS Bin

Source:→ Ajaxian