The stock footage site Videoblocks first came onto our radar at last year's NAB show where they launched their marketplace, enabling filmmakers to add material to the Videoblocks library—and get paid for every sale. In a year's time the marketplace has now aggregated 1.6 million videos. Those contributors have been rewarded with about $2 million worth of payouts, the first million coming within the first eight months, and the next million coming in the following four (presumably you can't average out the funds on a per-contributor basis; as with any marketplace, there are likely a small number of contributors with high quality content that are doing well). Videoblocks differs from other stock sites in two ways: one, it offers filmmakers 100% of the purchase price of a clip, and two (related), you are required to be a member to purchase video. The annual fee for members is $99 (which is presumably how they can afford to give filmmakers a 100% royalty!), but it's free to submit content.
More of No Film School's coverage from the NAB showroom floor: