When we launched RallyMe we figured that the sweet spot for each individual rally would be about $5,000. Further, we figured that if you could get between 30 and 40 boosters that you'd have a high probability of success. Now, a company called BigML has quantified our assumptions with a data model. They built a model based on 17,000 crowdfunding campaigns. The bottom line? Set your goal below $8K and get at least 34 Boosters and you'll have a 92 percent chance of success. Set it at $5K and get 34 boosters and you have a 96 percent chance of success. Read more about it here.