I’ve got a custom module on a D6 client site that contains a few rules actions and conditions that another dev created. There are about 10 detailed rules set up on the system relying on these actions & conditions. We needed to rename the module (its actually a feature module) for consistency and better organization.
While there is still much wailing and gnashing of teeth over the closing of Google Reader (in my house anyway ;), The basic functionality of ANY RSS reader is pretty straightforward: it should enable you to subscribe to RSS feeds, categorize them in a useful way, and browse the results. While GR has a ton of other nifty features that we won’t touch on here, you can get these basic RSS reader features on your own site in 10 minutes or less.