The best feature of this tool to me personally, was that it allowed for multiple users at once.
It also had an easy way to share screenshots with other members in real time! It could be improved by adding more features or better interface design/layout but I think they are working hard towards making those improvements already so we can't complain too much about their latest releases. We were able to use httpwatch from anywhere around the world as long as someone else has access to our internet connection (we used 3G). This meant no need to have dedicated employees sitting next to each other all day just waiting for customers' requests - instead you would simply log into your computer when needed via web browser and get right back down to work without delay.