"Knetbooks" is an online textbook rental service. Reviews about "Knetbooks" are mixed. Some customers have reported satisfactory experiences, mentioning good condition books, timely delivery, and affordable prices. However, there are also negative reviews, with customers reporting issues such as non-responsive customer service, delayed deliveries, and disorganization. It's recommended to read through several reviews and make an informed decision based on the experiences of others. Please note that experiences can vary from person to person.