Actually, this makes me wonder why every institution doesn't have an unregulated broadcast channel like this. Seems like it's a great way to embrace community. And I bet you that, if you run it long enough, there'd be some tangible value come from it, as well as the intangible value of fun.
In physical environments, we all have 'water cooler' conversations all the time. As we move more into 100% virtuality, is there a need for a digital analogue (if you'll excuse the somewhat jarring juxtaposition of phrases there)?