Welcome. We've opened up the forums in case anyone wants to contribute.<br />
We're still under development so don't waste too many cycles on it yet -- only run one or two jobs at a time. Let us know of any problems.<br />
I believe that there are incompatibilities on Windows with VirtualBox versions beyond 4.3.12 (at least that's what vLHC@Home has found), but I seem to be able to run with 4.3.20 on Linux. I don't have a Mac box myself (yet...) so I have no experience there.