Since there are so many potential "fool" announcements today, you might as well play along at home. Eventful, for instance, is announcing that it is switching to an "all Twitter" interface to bypass issues like uptime, instant responses, clean markup, and SEO:
Starting May 1st, Eventful.com will redirect all site traffic to the Eventful Chicken page on Twitter, and all stickers will be automatically replaced by Twitter badges for Eventful Chicken. Existing Eventful.com users will be given the month of April to make the switch. The site will feature a screencast tutorial on using the new interface, including how to befriend the Chicken, ask it for event information, and patiently await its attention.
This one doesn't require much thought to figure out, but we'll ask anyway: fact or fool?