3Qs: When Web reviews aren’t what they seem

Crowd­sourced social media plat­forms such as Face­book and Yelp are increas­ingly being infil­trated by fake accounts and reviews that cloud the legit­i­macy of some online rating sys­tems. Assis­tant pro­fessor Christo Wilson dubbed this phe­nom­enon “crowd­turfing,” and he’s deter­mined to make these sys­tems more secure.