Archived press releases. However, archived releases are appreciated when background information is needed. For a simple but serviceable press-release archive, check out Engage Inc. , which categorizes releases by the years the news occurred. Keep it current. Not updating the name of your public relations contact, or worse, your CEO, really pushes a reporter's buttons.
Old news gets a very frosty response from the media.
Recognize that press releases and features are different. Don't post press releases as text for your site, and don't give reporters feature pieces to wade through. Consider the guru. Don Middleberg, the guru of digital public relations, also recommends downloadable images, video, and audio for reporters. Follow his suggestions, and you'll be a favorite news source of every reporter.