Ok, I figured it out.  The link on the Anandtech site is this:
http://www.zagg.com/showspecial

Which *immediately* redirects you to
http://www.invisibleshield.com

You only get the discount if you clicked from the first link.  Thanks so 
much for passing this along, Brian.  I got a shield for my GPS & phone, 
my dad's GPS, and my 2 kids' Sandisk music players.  All for under $30 
(free shipping if you're willing to wait)!

-Lisa
"PoledraDog"

Brian Casteel wrote:
> They used to be advertised on Groundspeak, but I couldn't tell you if they
> still are.  You just need to go directly to their site and the prices are
> 50% off there when you order.  No coupon discounts or anything, and the best
> part is free shipping on most items.  I came across this on the Anandtech
> Hot Deals forum this morning.
>
> Brian
> Team A.I.
>