Yelp's ratings, reviews, recommendations, and tips aren't very good for food, bars, and things to do. I've always found Foursquare's to be much higher quality.
I think the parent was suggesting that Yelp is good enough. When you have a brand as recognizable as Yelp and viewed as "good enough" then it becomes nearly impossible for a competitor to beat them by simply being better.
You have to be different and I'm not sure what needs to be different about Yelp.
You have to be different and I'm not sure what needs to be different about Yelp.