I'm having an unusually hard time finding an "RSS keyword alert" app, whether on the web or a desktop app. Here's what I want to do: - Enter an RSS feed. - Enter my keywords. - The app scans the feed at regular intervals, and alerts me (email? Growl?) when a keyword has been found. I found some older web solutions that are now defunct, and have searched a variety of other usual places. Odd how this seems so hard to find as it seems to be a very common thing to do. I know on some sites like Google News, they have their own keyword alerts, but this is for specific RSS feeds not covered there, not the general news. For example: http://www.kvraudio.com/ssi/forum_43.rss Does anyone use/recommend an RSS keyword alert app? Thanks so much.