Elon Musk founded x.com in 1999 as an online bank, which was acquired by Confinity in 2000 to form PayPal. According to biographer Walter Isaacson, "Musk's concept for x.com was grand. It would be a one-stop everything-store for all financial needs." Ahead of his Twitter takeover, Musk told Isaacson, "I'm very excited about finally implementing x.com...using Twitter as an accelerant."