People can submit their world-changing ideas and possibly have them implemented by a powerful organization? Potentially make a hugely influential and technically knowledgeable person aware of some of the issues people here are interested/concerned with?
http://www.impatientoptimists.org/Posts/2012/01/Do-You-Have-a-WorldChanging-Idea?WT.mc_id=1_11_2012_studentannualletter_fb&WT.tsrc=Facebook