A long time ago, I used a service where you subscribed to any number of blogs via their RSS feeds and the service created a daily or weekly e-book for you with

A long time ago, I used a service where you subscribed to any number of blogs via their RSS feeds and the service created a daily or weekly e-book for you with all of the new posts, complete with a table of contents. If you had a Kindle, you could have it automatically sent to your device via the device's email address. It was wonderful, but eventually shut down - probably due to fewer and fewer blogs offering RSS feeds.