Redirecting to a temporary promotion page based on cookies

[AdiRste]

Hi,

Let's say my homepage is www.xxxx.com but I want to redirect users who land on the homepage who don't already have a cookie from the site, to a temporary landing page like www.xxxx.com?AFF_ID=XXXXX as an example, how do I stop Google bot from following that redirect? I don't want Google to cache that as my homepage because I'll lose all rankings??

Thanks!

[blu42media]

Google doesn't store cookies when it indexes your site, so it will "see" your page as someone who hasn't visited before.

Perhaps there's another way to look at this.  How about redirecting all user-agents except googlebot to achieve what you want?  Then you'd keep the redirect you want and your rankings!