Executive director, The Gild New York
YELP: Coffee-table books
"Yelp is about sharing as much as reviews."
ROTTEN TOMATOES: Movie-screening series
"Local critics on hand to debate the films."
"Compile the best-of lists, many of which go viral."
Creative director, Prophet
YELP: Manned kiosks "Influence people at high-traffic areas."
ROTTEN TOMATOES: Video booths "Moviegoers could review films in the theater afterward."
CRAIGLIST: Flea market "Craigslist is targeted search; this is for browsing."
Executive creative director, Grey
YELP: Page-a-day calendar "I could cross off all the restaurants I try."
ROTTEN TOMATOES: Newspaper section "Paper's critics could go head-to-head with readers."
CRAIGLIST: [Won't play along] "I don't see its going analog as being a good idea."
A version of this article appeared in the December 2013 / January 2014 issue of Fast Company magazine.