While blogs arguably make up the majority of RSS content, many news sites also syndicate content via RSS—for example, Search Engine Watch is available via RSS feeds.

But RSS feeds are increasingly being used for other types of content. For example, you can get RSS feeds with weather forecasts, company news and financial information, package tracking and lots of others. Even the venerable Yahoo Directory is available now through RSS feeds.

Although there are literally millions of feeds available, finding those that are appealing and relevant to you isn't always easy. The major search engines are all dabbling with feed search, but none offer a robust service as yet. And while there are a number of smaller, specialized blog and feed search engines, their lack of resources and the problem of blog and feed spam means their search results are often useless. So finding relevant feeds, at least for the time-being, often remains a hit-or-miss affair.

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