Jack Vinson, in his Knowledge Jolt blog, used the metaphor of a "Streams of news" in describing an RSS aggregator.
Attensa has a feature called the "river of news" where they combine all of the RSS feed postings into one list to literally give you a river of news as a quick to scan headlines.
The river of news is similar to what people experience with email. It is as if someone were emailing you all of these stories for you to read. But instead of them clogging your email with more items that do not require your action, they are set to the side in the aggregator.
Below is an image of the river of news in my Attensa demo.