Hmm... the most recent one I finished was Mindsharing by Lior Zoref. Bought the book from a store on a whim, and it was pretty interesting seeing how he saw the potential of tapping on online social communities to gather crowd wisdom. It might not be completely revolutionary, but it's still generally up to date in terms of the changes seen in the online social scene.
http://hpmor.com/chapter/113 -- You have 60 hours. Your solution must at least allow Harry to evade immediate death,
despite being naked, holding only his wand, facing 36 Death Eaters
plus the fully resurrected Lord Voldemort. If a viable solution is posted before
12:01AM Pacific Time (8:01AM UTC) on Tuesday, March 3rd, 2015,
the story will continue to Ch. 121. Otherwise you will get a shorter and sadder ending. We passed.the art of crowdsourcing everything
This is your final exam.