I think something great that has come out of several news organizations is the idea of a topics page for their online editions. A topics page typically contains a brief background of more general topics, such as The Debt Crisis, The Board of Education, the War on Iraq, and archives of stories, articles and links related to that topic. I think this is an amazing reference tool for current readers and an introduction to new, young readers who might not be familiar with certain topics, such as the Texas Ethics Commission or the history of abortion.
I first was introduced to Topics pages last year when I stumbled on the Texas Tribune's site when it first started. As its progressed, the Tribune has amassed an impressive list of topics related to state agencies, political races, current issues, and so much more. Even better, it has a list of editor's picks that link to hot topics.