A crowdscraper is a website that makes use of volunteer manpower to scrape content from third party websites under the guise of being a social medium. The volunteers receive digital rewards such as "likes," "followers" or "friends." Crowdscrapers, by nature, promote a culture of unbridled copyright infringement. While they are probably legally protected from infringement claims by the DMCA, their volunteer base isn't and serves as a human legal shield.
Pinterest.com, Loveit.com, ffffound.com and EHow Spark are popular or emerging crowdscrapers.