Banks

I received an offer through the post of 6.40% p.a. interest on any new deposits on top of my current deposits for a three month promotional period with INGDirect. INGDirect's current interest rate is 5.40% p.a. meaning if you invest in this technique you would get $54 for every $1000 you deposit a year. But let's say you got suckered into this promotion and you had a spare $2000 lying in your other bank account. So you log onto their internet banking website and transfer over your $2000, lured by the additional 1% p.a. offering that INGDirect was promoting. Now that additional $2000 over the three month period that the promotional interest rate is valid for will earn you $32. ($2000 x 6.4% x 3 / 12)