Most feed readers only allow you to subscribe to channels via a web server.
This is not much good if you want information that is not available this way e.g. it's in a database or locked up in another program.
Or maybe it's on another web site that don't offer feeds and have no plans to do so.
Perhaps it's sensitive information that you don't want to publish on a web site that is accessible by anyone and everyone.
Awasu's channel plugins solve all these issues and let you monitor any kind of information, regardless of where it is.
Whether it's in a database or other third-party application, if it's only available from a web page, no matter where the information you want lives, you can write a plugin to retrieve it and convert it into a feed that Awasu can use.