(cross-posted from a Loose Wire sister site, ConvergedMedia.net)
CNN.com has a good way of informing readers of the ‘freshness’ of news by adding notes in red to indicate when the story was added or updated. (In the example above it also adds a ‘developing story’ label.)
This kind of thing is helpful in that the site can still order stories by their importance, but also flag those that are being updated:
(It also adds a rather cute touch to its whacky stories, allowing readers to order a T-shirt with the headline on it:)
Click on the T-shirt logo and you’re taken to a page where you can order the shirt: