Taking notes, sharing thoughts with a team or others who may be interested, bouncing ideas around or working on quickly getting a job done; all these things are so easily accomplished with the help of a live group word processing tool. HackPad offers just this. It's a lightweight collaborative tool that allows users to invite other users and edit documents in real time. What's even better is that the availability of the HackPad API means that it's possible to integrate this functionality into other sites.