- Yelp's API Charges Anger Developers: The article discusses the frustration among developers regarding Yelp's lack of transparency around its API charges. Developers claim that Yelp has been increasing API costs without clear communication, making it difficult for them to plan their budgets and continue using the Yelp API in their applications.

- Yelp's Opaque Pricing Model: The article highlights that Yelp's API pricing model is not well-documented, and the company has been making changes to the pricing structure without providing clear explanations. This has led to developers feeling blindsided by unexpected API costs, which can significantly impact their business models.

- Calls for Improved Transparency: The article suggests that developers are calling for Yelp to be more transparent about its API pricing and any changes to the pricing structure. They argue that this level of transparency is essential for them to make informed decisions about integrating Yelp's services into their applications and maintaining a sustainable business model.