Cloudnumbers.com, a platform for computationally intensive calculations in the cloud, is looking for beta users.
It offers an intuitive web interface and allows you access to hundreds of computers within a few minutes after registration.
Cloudnumbers.com will support analytic software including R, NumPy, and Octave, and life science applications like BLAST, and Bayesian Evolutionary Analysis.
Currently, it is especially interested in users to test its R environment.
You can register for BETA in March 2011 at www.cloudnumbers.com