I went to activate my new SPOT device tonight and was looking through threads on which services I might be interested. Saw a post from Snyd saying he was able to get tracking service free ($50) when he bought the insurance for the device itself ($18). I did some searching around on the net and found a promotional code for this very promotion (also found it later on the SPOT website). When signing up, enter TRACKAPALOOZA into the promotional code box. It will automatically change over to the basic service, tracking, and insurance. I ended up getting all of this plus the GEOS rescue insurance for $130. Was up a bit over $160 without the code.
Again - TRACKAPALOOZA
If anyone is looking to activate a new SPOT, it's worth using. Pretty decent savings. It is good through the end of August.