Have you ever thought about building an RSS aggregator app with Rails? If yes then I have some goods news for you. I created WordpRSS - a simple Ruby gem that will help you to pull the data from any Wordpress RSS channel. If you are not sure if a given blog is using Wordpress as a blogging engine then it's also helpful as it provides the method to check this.

The GitHub page for this gem is here: https://github.com/rubyhero/wordprss

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