Under Review
I've been playing around with Custom Fields (for consideration in actual implementation) and have found them to be too limited at this point to be practical, especially since I can't control the way they look via CSS. Also, if I make a mistake (or the customer makes a mistake or typo) there is no way to correct it without blowing away (losing) the whole idea. So the moderator really needs to be able to have a way to modify the contents of a custom field.
I know it is just a matter of time before this type of thing is implemented, but since I was testing them I thought I would provide some feedback.