As a matter of fact, the Wikitude.me page should claim the following message:
February 18th, 2013 It has been about 4 years since we launched Wikitude.me to give our community a tool to generate places on the web while on their PCs to then view these POIs (Points of Interest) in Augmented Reality inside of the Wikitude World Browser. Lots of things have changed since then. To make a long story short, Wikitude.me has reached the end of its life cycle and will therefore be discontinued on February 18th. We will continue to list the Wikitude.me World inside of Wikitude which will allow you to still view the places you have created in the past. Should you want to create new places and your very own AR world, we highly recommend using our Devzone.