Best definition
A yelpcunt is a female with a yelp account that uses the website for attention whoring and teasing men.
These women

engage in the highest drama on the website due their narcissistic nature. The mayhem yelpcunts cause are
flagging off women more attractive than the yelpcunt, arguing on the threads, sending personal messages on the website disparaging any member that is not kissing the yelpcunts butt.Use caution if you come into contact with a yelpcunt. They can easily flag your yelp account into closure.

Sunny K. was the biggest yelpcunt of all time when she flagging off all the pretty women.