Of the two websites we researched I think that the only website we could use would be IndieGoGo.com. We also researched Kiva.org which purpose is to help entripenurs in developing countries be able to find investment opportunistic to start business. IndieGoGo.com on the other hand would probably be one of the best ways to gain funds for a design challenge. This is because that indiegogo focuses as much on the investment part as they do on social media expose. This exposure would be an amazing way to be able to reach as many people for the challenge as possible. It allows for people from all over the world to find out about the contest (if I wanted to make a world wide competition) and to bring their own contributions in monetary and the contest itself. I think it would be silly not to use indiegogo because there would be next to no downside.
So yes i would use one of the websites we have researched.