[richtaur]

I built something like this (a long time ago) for my own purposes. So did a startup we're working with!

That says there might be a need for it, but on the downside it's really simple to build, so competition can spring up very quickly.

[nic-ferrier]

it's simple to build a simple one... but the more polished takes more time. Why not just offload that work to someone else? That's our view anyway. We've chatted to some potential clients and other companies running their operations this way.

[jvandenbroeck]

There are very nice solutions out there already, Microsoft Lync & IBM Sametime.