> It's like Google Docs for any application

Isn't this a bit too misleading? The appeal of Google Docs is that two people can work on a spreadsheet at the same time. They can be working on different cells or even different sheets of a workbook. PowWow allows one person to work on a spreadsheet at a time but allows you to quickly and seamlessly switch who is working on it. In other words, only one person can type.