This was first done by SETI with SETI@Home to search radio signals from space for ET's. It was a fine idea till someone mucked it up and decided to make a profit off of it. Why help drug companies make more money off of us for less work? Now if they were going to pay me for my CPU time, I wouldn't mind sharing with a for profit business. You can say it's done for pure intentions by a EDU all you like. I know how many EDU sites are Pharmalogically funded and backed for reasearch purposes.