Imgur has developed a very active community and they have a MINIMUM of $20,000 per "promoted post" (ad). Considering how often I see new ads on there (at least once a month), I'd say they've finally figured out how to actually monetize an img hosting site. Whether they can avoid throwing away all that money on inefficiency and poor management is another story though. If anyone here knows how to scale an imgur clone properly, and can do it as a one or two person team, you'd probably have an amazing startup right there.