I have seen this come up a few time and never had the extra CPU to participate in anything close to this. As of now I guess I have the extra and will be giving this a full computer. I have one being sent right now and I am in the process of moving and my stuff has not arrived yet. It used to be my old web server and since I have stopped host a site for the family I will be putting it to use for this project.
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.