Your local newspaper probably uses maps on its site. If it doesn't, it will soon. As newspapers look online for readership (and thus, revenue), they look for new ways to show information related to the places they cover.
The latest release of desktop Twitter app TweetDeck launched with a ton of new features, which includes showing geolocated tweets. If a tweet includes the location meta-data, TweetDeck shows a tiny marker icon. Click the icon and you get a map of the location.