I used gDisk what we can use gmail like as data server. Now, I begin to use it for backup my projects. It is nice idea but current vearsion is not stabled. In the feuture, it will be so good software.
http://www.worldcommunitygrid.org/index.jsp I found this site. This is one kind of volanteer computing for helping reserch for cancer. This is bit interesting. If I will be able to make some playing time then I will try to use it.