RSS / Subscriptions
For those who are not familiar with the term, RSS is an acronym that stands for "Really Simple Syndication." It allows you to keep up-to-date on content from sites you are interested in.
You can use any number of web-based readers like Google Reader, Pageflakes, netvibes, newsgator, MY! Yahoo or My AOL. You can also use stand alone readers like FeedDemon, NewsFire, or Shrook.