I don't really use Yelp unless I have a truly terrible experience somewhere, like that one time a restaurant was so disgusted with having to serve me, that they sat me near the kitchen and served me cold food for no discernible reason (did I smell? It was a French restaurant!).
This development, of course, means I'll be doing many more Yelp reviews, I suppose: the Federal government and Yelp have teamed up to allow you to "review" Federal agencies, in a move they believe will help them determine where they lag behind in customer service. Yelp is pretty psyched about it, and the Federal government believes it's a solid step forward into the information age. Now, instead of arguing with low-level bureaucrats and then crying silently into your banana split, you can air your grievances directly to the Internet, where the Federal government is still free to ignore you.