I've been sitting on the sidelines watching other bloggers make money by taking advantage of credit card hacks. Sit no more, as I just applied, and was approved for, the Ink Plus by Chase Business Card. The appeal is simple: if I spend $5,000 during the first three months, I will receive 50,000 Ultimate Rewards points, worth $625 in free travel. The card has a $95 annual fee which is waived for the first year. I will have to decide if it is worth keeping. Besides the opening bonus, I can earn 5x points at office supply stores and phone/Internet bills and 2x points at gas stations and hotels.
There's no need to explain how this "game" works: plenty of sites, including Tight Fisted Miser, The Points Guy and Johnny Moneyseed detail how to take advantage of the offers.
Now that I have learned some strategies, I'll be looking at opening other cards with the goal of drastically reducing my travel expenses.