I was wondering if anyone has a way to find out what font a particular logo is?

I need to find out what font the "diet.com" logo (with the orange "i") at www.diet.com is.

I've tried contacting them- thats a dead end. I've also typed diet.com into my font book and tried to match it to all the possibilities of fonts I have- no luck.

It's probably a font I don't have. Does anyone have any idea what font it could be or how I could find out?