His recent research interests focus on crowdsourcing and on mining user-generated content on the Internet. He received his Ph.D. in Computer Science from Columbia University in 2004, with distinction. He has received three "Best Paper" awards (IEEE ICDE 2005, ACM SIGMOD 2006, WWW 2011), two "Best Paper Runner Up" awards (JCDL 2002, ACM KDD 2008), and is also a recipient of a CAREER award from the National Science Foundation. He also maintains the blog "A Computer Scientist in a Business School" where he blogs about crowdsourcing, user-generated content, and other random facts, and his blogging activity seems to generate more interest and recognition than any of the other activities mentioned in this bio.