Because we all want something to laugh about this year... Link to any interesting April Fools stuff going on this year!
Starting us off, google maps has started the pokemon challenge (http://www.youtube.com/watch?v=4YMD6xELI_k) for their mobile apps. Around the world, in any number of random places, you'll be able to find pokemon hiding in your favorite cities, monuments, and tourist attractions. It's not something that'll fool anybody obviously, but it was cute to hunt for pokemon for a bit, and seeing if one found any near their hometown (I actually did find one in Houston!).
Pretty sure this is one.... http://www.htc.com/www/go/gluuv/
And here is some more... http://9to5google.com/2014/03/31/htc-and-samsung-accidentally-make-the-same-april-fools-joke-announce-fake-wearable-tech-gloves/
http://home.web.cern.ch/about/updates/2014/04/cern-switch-comic-sans
The well-respected journal Science: http://news.sciencemag.org/physics/2014/04/scientists-find-imprint-universe-existed-big-bang
http://imgur.com/gallery/jtdqoMd
https://tools.ietf.org/html/rfc7168
https://tools.ietf.org/html/rfc7169
May be slightly esoteric...