RSS feeds are an excellent way to keep up to date with all kinds of information sources (blogs, news, the weather, discussions,..). An RSS feed reader will check subscribed channels for updates automatically and let you browse the news that's important to you. Here are my top picks of news aggregators for Mac users.
Google Reader is a decidedly simple yet very usable and, thanks to a flexible labeling system, quite comprehensive web-based RSS feed reader.
NetNewsWire is competent and flexible RSS feed reader that combines Mac elegance with smart tools that help you follow news updates efficiently. Fast search and smart folders make getting to the important updates a snap (though NetNewsWire does not plug into Spotlight) and reading news in NetNewsWire is a pleasure indeed.
NewsFire is an RSS reader designed with beauty and simplicity in mind. This makes NewsFire attractive, easy to use and very functional. The price you pay is in some advanced features the lack of which makes NewsFire best suited for finding, reading and then forgetting news, not for archiving and handling them.
Squeet delivers news items from RSS and Atom feeds to your email Inbox, integrating them nicely with other incoming "stuff" and exposing them to all the power of your email program while providing convenient subscription management itself. Unfortunately, Squeet emails themselves are not all that appealing and, worse, hard-coded to take up too much horizontal screen estate. More flexible delivery schedules would be great, too.
RSS Menu turns the Mac OS X menu bar into a versatile RSS feed reader that not only displays headlines but also complete stories, lets you group feeds and integrates with both Safari and iTunes. Apart from the obvious shortcomings of a menu-based RSS feed reader, it would be nice if RSS Menu could hide read items and integrate with Google Reader and other web-based aggregators.