You misunderstand how the site works. I'm not republishing RSS feeds of any of the source on the site. The articles come from copyright-free press releases related to the news published by other sites (sometimes, their content is the copy-pasted press release, too, so that might have confused you).
Unless the source explicitly made those articles public domain (or they're older than Mickey Mouse), those articles are copyrighted. (No, the absence of a copyright notice doesn't mean that they're copyright-free.)
