It's great to hear that!

Sometimes, it seems like the products that succeed in a free market are not necessarily the products that will make consumers happiest in the long run.

For instance: Facebook has a ludicrously high valuation, but is it actually creating that much value? I don't think so -- the monetary valuation of Facebook is mostly due to the fact that it is addictive and contagious, rather than due to any substantial consumer betterment created by the service.

(That general critique is also applicable to most of the facebook apps out there so far, I think)