Another great option for Moodle and anything web-based is RSS. Using RSS, you can basically post headlines in Moodle courses or on your website, blog, whatever, that update themselves.
In a Geography course for international students I posted the National Geographic RSS and my students really got excited. The headline took them to a photo of a crocodile with a man's hand in its mouth. Talk about a conversation topic. I am also using it to post the daily local news.
If you are really ambitious you can create your own RSS, google it, and go for it. All I know is that this is an amazing technology that let's us stay up-to-date on virtually any topic (I use the surf report). For Moodlers, it's easy, just add an RSS block in your courses.