All of these example FeedSweep widgets have been created with the Advanced Editor. When you view the example, you are seeing actual live FeedSweeps. Notice the dates are as little as 10 minutes old.
This example is reading both CNN and Reuters - Domestic News feeds to produce the content. However, keep in mind this is live and although the individual news items are sorted by date, each agency might not have produced a new item recently.
FeedSweep supports foreign languages. This is a Yahoo France feed. Note the use of acutes and other special French characters.
Here is a Google blog search on the term 'UFO' - with the results returned by feed - then converted by a FeedSweep widget to HTML in order to display on this page. Remember, this is live!
FeedBurner has become a very popular option for feed producers and provides a rich source of content. Here, the Chicago Sports Review flows their content through FeedBurner, which checks and verifies the feed and then this example FeedSweep widget pulls it back via a feed and converts to the HTML you see below.