Wow, just wow... Not only Asana surprised me as aparently an awesome productivity tool that I hope I might use in my start-up really soon, but the bunch of stupid comments here also surprised me.
The video is long, but you can get a good grasp of the product in the first few minutes. The rest of the video is in-depth discussion on how they started thinking of how to do it, how they think they will reach the companies and also inner workings on how the software work.