A news feed is a file that is published by websites providing a quick view of the most recently updated content to external sites.
Most websites today publish a news feed (usually using RSS or ATOM technologies), allowing you to provide your readers with timely updates from varied sources. The feed usually includes the title of each new headline or blog post (with a link to the acutal page), the first paragraph of the post, and often the full text as well.
Setting up a news feed on your network from modules > News Feeds
To find relevant news feeds - enter a search term into the box provided. A list of relevant news feeds will appear. Click on the 'Preview' button to see what headlines the feed currently includes. If the content of the feed is not what you expected, try refining your search term.
When you find a feed you like choose whether to show the summary of each post, and the number of entries you wish to display.
Adding a specific news feed - if you have a specific news feed you wish to add to your network, click the 'Add feed by URL' button, and copy the feed URL to the box. When the system finds the feed it will display it, and give you the option to display the summary of each post and the total number of entries.
You will be able to refine and change the settings once the feed is displayed on your network.