A website where new content is added is ideal for an RSS feed. This may sound like a broad category, but there are many great examples: a news website with regular news from many contributors, a blog with frequent updates, an image board where many users can post images, a band website where new music is posted, a podcast or video blog (vlog). Even a shopping site can have an RSS feed to notify customers when new products are added.
For most small sites, a popular choice is to create a single RSS feed for each new update on the site. For example, if you’re a musician, add an update every time you post a new song, if you’re a blogger, then every time you post a new blog post.
But for a large site that often has a number of contributors, having multiple RSS feeds, such as one for each content tag and author, is a great way to allow users to filter your site’s content by only the pieces they are interested in. Allowing users to choose the content they want will keep them coming back. For example, a user may only be interested in “Ada Rose Cannon” articles or “Fun Facts” topics.
An RSS feed is essentially a machine-readable view of the various index pages on your website. If there is a page that allows users to get a filtered view of your website’s content, then creating a machine-readable RSS feed for it is also a natural choice.