Based on the user reviews, here are three cons and three pros, 15 words limited for each item: **Cons:** 1. Insufficient filters and search function makes it hard to find specific content. 2. Frequent server errors and crashes disrupt user experience and productivity. 3. Lack of offline access limits its use in areas with poor internet connection. **Pros:** 1. Rich database of various materials and content from diverse sources is impressive. 2. Innovative UI design and navigation make it easy to explore and discover new content. 3. Personalized recommendations based on user behavior and interests are surprisingly accurate.