I would have replied to this anyway as I am currently very cheesed off with Amazon. They've strung me along about the availablity of a product, even telling me on the phone that it was being despatched there and then. Needless to say it still hasn't come, the order tracking says it is 'dispatching soon' but they took the money last Tuesday.
Anyway, having only recently installed a completely new XP I haven't been to many internet sites yet - however one was Amazon. I've just done an ad-aware scan and there's alexa too. So if it is from them I'm going to be doubly pee'd off and they are going to get another snotagram.
I've done some more searching - it seems you can't escape it. Alexa seems to be associated with Amazon, Google and even Microsoft. See these links:
http://searchenginewatch.com/searchd...514-alexa.html
http://pages.alexa.com/company/partn...Corp_W_t_40_L1