Own a business that does shipping or advertising? This is your lucky day! Use this link to get an American Express Business Gold Rewards card and you'll earn 5x Membership Rewards points on up to $20,000 of advertising or shipping expenses for the first three months of the card. If it fits, it's an easy way to pick up 100,000 MR points, which to me have a baseline value of at least $2,000 but can be worth much more when used well. Membership Rewards points are renowned for their flexibility. You can transfer them into a ton of travel rewards programs including Delta, Jet Blue, Virgin, Qantas, British Airways, Hilton and Hyatt, often with very lucrative transfer bonuses of 25% to 50%. Beyond the initial bonus, this is a strong rewards card: you earn 3x points on airlines - more than any airline card, 2x on gas, advertising and shipping (after the 90 day 5x bonus) and 1x on everything else. It also comes with a full slate of Amex benefits like extended warranty and return protection. Don't own a business? You can still net 25,000 bonus points by spending $2,000 in 90 days on a personal Amex Premier Rewards Gold Card.