From the site:

"The Azureus platform is an application combined with a service that enables publishers to publish and distribute creations in high-quality (Standard-Definition or High-Definition quality videos, high-fidelity audio), with an unprecedented ease of use. The process takes minutes, and the videos can reach substantially more viewers - worldwide, almost instantly. Content creators can also distribute content to millions without paying any hosting or bandwidth costs. Azureus can also help create buzz, by spreading a particular movie across the internet as easily as if it was a short video clip."

Download Vuze (for Mac or Linux)