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Earn extra money on Rakuten (formerly known as Ebates) — a site that gets you up to 40% cash back when you shop at your favorite stores like Walmart, Target, eBay, Kohl’s and Macy’s. As a bonus for joining Rakuten, you’ll earn $40 when you spend at least $40 within the first 90 days of signing up. This may be the easiest money you’ll earn all year! Here’s how to claim your free $40 bonus: Sign up…