The design of the site looks really good, and I think there's definitely a need for this. Right now I don't think there are many good (and affordable) tools to manage different support channels. I have tried other options like Hootsuite or Assistly before, and they just didn't work that well. There's an opportunity for something that is fast, functional, and isn't a nightmare to set up.
The biggest question in my mind is "how much does it cost?!" This is really the most important part. Why sign up to try something out if you don't know if you can afford it in the first place? I hate it when companies hide the pricing info behind a wall.
Also, it would be really great if you could have a working demo that people can play with, because the descriptions look great and all, but it's hard to tell how well it actually works without something to play with.