The Federal Trade Commission sued Amazon.com today for allegedly enrolling consumers in Amazon Prime without their consent and knowingly making it difficult for consumers to cancel their Prime subscriptions. The complaint charges that Amazon used manipulative, coercive, or deceptive user-interface designs known as “dark patterns” to trick consumers into enrolling in automatically-renewing Prime subscriptions. The FTC also alleges that Amazon knowingly complicated the cancellation process for Prime subscribers who sought to end their membership.