Tool for keeping meetings on time

Hi all,

I'm a former PM, current software dev. In my role as a PM I noticed most of my time was going towards managing meetings. This is a real skill that takes time to build. To help those in a similar position I built the following tool:

http://www.standy.us

It handles meeting time management, agenda setting, and tracking and sending action items. I'm envisioning you could project this or have it on a tablet that everyone can see during the meeting so everyone is aware of the remaining agenda, and time remaining.

I'm keeping it simple to start but would love to hear your feedback on whether you find this useful, and if not why? What could be improved upon?

Thanks!