yelper
/ˈjɛlpər/Definitions
1. noun
A person who writes reviews on Yelp, often in a humorous or critical manner.
“As a yelper, she loved to share her honest opinions about local restaurants on social media.”
2. verb
To write or leave a review on Yelp, especially a negative one.
“The company tried to yelp their competitor by posting a fake review online.”