I have the "mini" firewire port, (dont know real name) on my HP laptop from 3 years ago, it cost me 500 pounds at the time.
I cant say i have ever used it though, maybe this is why they have stopped putting them on as a lot of people may be like me and not use it.
EDIT: come to think of it i had used it for my video camera, i would have been out of luck without the firewire in that case!