My younger, smarter electrical engineering cousin was telling last week that
the "XML" tags indicate a link that can be taken to get the web-info
in a format for rapid repackaging and wide distribution.
I'd noticed some of the orange "XML" tags on some of the Yahoo! News webpages earlier.
I guess it's maybe a way to get people to "repackage" Yahoo's news and
maybe this causes "traffic" back to their site (and more revenues?).
I invite others to correct/amplify the gibberish I've posted here.
Yahoo is just but one such source where you can get real time news delivered to your newsreader. They also offer the ability for website desigers and bloggers to have that news appear on their webpages and blogs. During the Presidential campaign season, I had political news headlines appear on my website, and it was real time. Just clicking on a link would take you to the sourced article of the headline.