This is a snapshot of the Reading Rainbow Kickstarter Campaign as of 8:36 PM MDT on May 30th, 2014.
Using the D3.js sankey plugin to visualize the breakdown of backers. On the left hand side, the total number of backers. The middle set of rectangles represents reward level (I used this as the pledge amount, but people may have pledged more to cover shipping or because they felt like giving more…) and the right side represents the total amount pledged so far.
Total backers : 70,911
Total amount : 3,152,039