Another way to profit from credit cards

[SLC Tortfeasor]

There've been threads about making money off credit cards before, but I'm planning a new one and want to share my feelings of smugness.

I currently make about $300 a year off of my Citi Platinum Mastercard (they offer 1% on most purchases, and I think 3-5% on certain purchases like gas and groceries).* But I just got an application from American Express for 0% interest on new purchases for 15 months.* So I think I'll just start putting all my new purchases on the new Amex card, paying the bare minimum monthly balance.* Every month instead of paying off my Amex balance, I'll pay my Emigrant Direct account (currently paying 4.5%) instead.

Even better, at the end of my 15 months of 0% interest with Amex, I'm sure I'll have plenty of offers to transfer my balance to another card also offering 0% for another 15 months.* So I'll just transfer the balance, and keep making 4.5% in Emigrant Direct.*

I'll be making effortless, no-risk profit off the credit card companies.