I like to build the spider page in such a way that even if it is detected, it should always be "acceptable". The use of a Flash index page will give you an almost unlimited choice for a spider page. If you take the position that, when you get caught for cloaking: Build your pages with this in mind, and you will already be ahead of your competition. One of the biggest mistakes is to feed a spider a page that any human will take one look at and know exactly what you are doing. Put images on your spider page, even if you are building a Lynx version.