REALLY SIMPLE SYNDICATION

"An RSS document, which is called a "feed", "web feed", or "channel", contains either a summary of content from an associated web site or the full text. RSS makes it possible for people to keep up with their favorite web sites in an automated manner that's easier than checking them manually" (wikipedia).

Blog the latest articles, events, news, etc.
Calendar the latest events, small group times and contacts.
Google Group the latest group messages and responses.
Resources the latest Christian perspectives and articles from around the web.
Sermons the latest reformed sermons from around the web.