Financing / Crowdfunding : Mood Reel Trailers on Fundraising Sites. by Stephen Alan Maier

Has anyone used a mood reel trailer on fundraising sites such as Indio Go Go or Kick Starter? I know it is an inexpensive way to help visualize your script for pitching to possible investors, however I have not heard of someone using a mood trailer on one of these sites to raise money . Is it because of legal aspects? If so, would linking it to a website that has the mood trailer make it legit with a disclaimer. Would like to here any feedback on the matter. Thanks!