What are some perks that would increase the amount of dollars that people spend on a venture? And what level of transparency would be useful?
Petridish is a recent KickStarter-like startup for crowdfunding science.
These funding mechanisms are in their very infancy, so I don't know if there will any "tried and true" techniques for a few months, assuming the funding model proves to work at all. That being said, it will be very similar to that on Kickstarter:
Provide an engaging, easy-to-understand description of:
What success will look like
(Note: This last point is often ignored, but it's crucial for the lay-audience. They may expect a particular cancer research project to end with a cancer cure, whereas in reality it will end with the identification of a particular protein responsible for a particular mutation. Stating this will avoid making you as an individual and scientists as a whole from looking stupid in the eyes of the public.)
Offer a constant (strictly defined, e.g. "weekly" or "biweekly") updates to backers
Regarding useful perks, I've noticed that a few of the successful drives offered things such as:
The final topic, transparency, is more difficult. On the one hand, you will need complete transparency. On the other hand, there is such a thing as too much transparency. In brief, your updates should serve to inform the backers about your work, while simultaneously and more subtly serving two other goals as well:
There's a blog post looking at the results of #SciFund! that might be of interest to you: http://www.imachordata.com/?p=1156
It looks, to me, like the predictors of success are probably having a robust social network presence, etc. and modest funding expectations.