Not to mention eliminating most of whatever potential benefit there was to asking the group. The extra layer of indirection ensures that the particularly insightful will be having insights into the thinking of their less astute peers rather than the topic itself.
http://www.impatientoptimists.org/Posts/2012/01/Do-You-Have-a-WorldChanging-Idea?WT.mc_id=1_11_2012_studentannualletter_fb&WT.tsrc=Facebook