Jon_King - 5:22 pm on Jun 8, 2006 (gmt 0)

I think it could be an outrageous breach of privacy. I also think it should be installed by opt-in only and then with wording like:

"WARNING! At this time we are unsure how we might use your data. We will decide that in the future. Proceed at own risk."

It should be bold and outlined in a border-box just like the Surgeon General's warning on US cigarette packs. This stuff toasts me.