As reported by TechCrunch, Amazon has released a new Kindle Cloud Reader service. The service allows users of both Macs and PCs running either Safari or Google Chrome to read their Kindle books online. Better yet, the service works on iPad Safari. Notably, this is a great solution for Amazon to workaround Apple’s in-app-purchase requirements for applications that offer purchases. A feature that owners of WiFi-only iPads will enjoy is page caching for offline reading.