Trying to wrap your head around cloud computing can be a hard feat to accomplish. First off, it’s a nebulous term to begin with (does it just mean a new business model?), and to boot – the cloud computing ecosystem is growing and reshaping itself daily… New SaaS, PaaS, Virtualization and Infrastructure startups come on the scene, seasoned technology giants roll out cloud offerings, and more and more people stamp the word “cloud” on their offering like that did with the term “Web 2.0″ a few years ago…

Last year, we (Under the Radar) set out to create a Cloud Computing Ecosystem map to try to organize and understand all of the players – in all levels of the stack.

This year (thank the cloudy heavens!) a group of cloud computing experts launched CLOUDBOOK - and online directory of all things cloud, as well as a home for thought leadership and information sharing.

Their search-able directories cover cloud products and services, research clouds, government clouds and cloud groups (so you can find like-minded folk). If you have a company or service that should be listed, you can add yourself to the CloudBook directory here.

As for the community of experts they’re gathering, it looks pretty impressive. CloudBook rolls up all of their contributors’ blogs into one of the most comprehensive cloud news streams I’ve seen. Want to be a contributor? Just sign up.

Check them out.