Buzzfeed has spent the past 6 months standing up a really great investigative team. They hired Mark Schoofs (a Pulitzer winner) from ProPublica as the head of their investigative team (http://jimromenesko.com/2013/10/21/mark-schoofs-leaves-propu... ), and recently were joined by 2014's Pulitzer winner for investigative reporting, Chris Hamby (http://www.capitalnewyork.com/article/media/2014/04/8543804/... ), and they've hired several really awesome people to fill out data/developer roles on the investigative team like Jeremy Singer-Vine (http://www.jsvine.com/ ).
Buzzfeed appears to be making a real go at the investigative journalism thing and it'll be interesting to see what they do.