Let's make sure that the OP understands this. When a bank is offering 6% APR (let's talk simple interest) that means that you would get 6% interest if you left your money in for 12 months. So if you put in $1000 on March 1, on February 25, 2008 you would have $1060 - the $60 paid once all at one time.
BUT, banks do not do simple interest. They do compounding interest. So let's say that you are getting 6% APR compounded monthly. So that $1000 that you would deposit on March 1 would get .5% (6% divided by 12 months) interest at the end of March - so you would have $100.50. Then at the end of April, you would get .5% interest on that $1005.00 - or $1010.03. Some banks compound daily, so you would take the APR and divide it by 365. Then you are earning interest on your interest every day.
I just wanted to make sure that you knew that if you deposited $1000 in HBSC at the 6% APR that they have right now, that you will NOT have $1060 at the end of the promotion.
I hope that this makes sense...