What is ATLAS? Well, I think this excerpt from its homepage sums up its purpose quite well:
ATLAS is a particle physics experiment at the Large Hadron Collider at CERN. The ATLAS detector is searching for new discoveries in the head-on collisions of protons of extraordinarily high energy. ATLAS will learn about the basic forces that have shaped our Universe since the beginning of time and that will determine its fate. Among the possible unknowns are the origin of mass, extra dimensions of space, unification of fundamental forces, and evidence for dark matter candidates in the Universe.
The project has enjoyed a lot of support since its publication on Cuusoo. That is to be expected for a subject that has over 3000 people working on it. The real key to its success though was the project getting a link from one of my favorite websites, I f***ing love science. The resulting swarm of support actually, apparently brought down Cuusoo. Another fine example of the importance of social media on getting projects to the review phase.