It still has some rough edges which we very much hope you all can help us work out. As we obviously want to monetize parts of our platform in time, we want to listen to the community to create the best tool possible. To that end, we have already open sourced some of the libraries behind Tawlk via http://github.com/Tawlk and we welcome any contributions or forks. We very much believe in the "Open source -Almost- Everything" model.
Also worth nothing about this demo, is that to make good use of our current limited server resources and to avoid hitting API and CPU limitations, we are utilizing many relatively new techniques including combinations of WebSockets, HTML5 localStorage, HTML5 App Caching, and direct browser-side data collection to make it work.
I hope you find the beta interesting and intuitive. I look forward to your comments or questions.
If you find bugs, please screenshot them with steps to reproduce so they can be taken care of quickly and please be nice to our servers :-)
EDIT: If you see connection errors you can dismiss it with the "x" in the top right. Search should still work, you just wont get any of the websocket supported sidebar stats (which i very much encourage you to try out on another network). We are working on some fallback connection methods to resolve this for firewalled and otherwise unable-to-connect users.
In the mean time, here is a reference rendering: http://dumpon.us/media/uploads/TAWLK_GUI_HORIZONTAL_V18_1.jp...