Previous HN discussion on the (now deleted) "Rides of Glory" post: https://news.ycombinator.com/item?id=8644080
They also seem to have deleted other blog posts that people have criticized, e.g. "Uberdata: How prostitution and alcohol make Uber better" [2].
Internet Archive links:
[1] https://web.archive.org/web/20140827195715/http://blog.uber....
[2] https://web.archive.org/web/20120524052917/http://blog.uber....