MetaMask has introduced its first Metal Cards, allowing users to spend cryptocurrency wherever Mastercard is accepted and earn 3% cashback in USDC on every transaction. The announcement was made by TheLAOOfficial, highlighting the card's features and encouraging users to join the waitlist. Additionally, Gemini is promoting its credit card that enables users to earn cryptocurrency with every purchase, while Cointelegraph is offering a limited-time promotion of $25 in Bitcoin for new sign-ups on its platform. The ongoing interest in crypto credit cards is further underscored by discussions on earning opportunities through staking and hosting crypto nodes.