Yelp is a website where users can post reviews of local businesses. Reviews on Yelp reflect the opinions of the community and are meant to help people find good places to eat, shop, and spend time. While businesses cannot remove negative reviews, they can sometimes engage with users to improve their service and change reviews. Advertising on Yelp does not guarantee good reviews, as both advertisers and non-advertisers receive positive and negative reviews. Business information on Yelp comes from third party sources and users, not just businesses themselves. While Yelp says businesses should not ask customers to post reviews, some think it is okay to ask as long as no incentive is offered.