3. Yelp.com is a social networking directory service. It helps people find local businesses based on location, ratings, and recommendations from friends.With other students from your class, sign up for an account on Yelp and download its mobile handheld. Connect with your classmates

(and other friends) on the Yelp service. Use Yelp for two weeks and then prepare a presentation with your group on the advantages and disadvantages of this new service.