Yes I can be dense as a stone! But when you buy something online a box pops up for purchase protection or some such thing. You buy a hammer and protection for $3.99, It is not just one online site but many. Now how does it work and how do you use it? One usually uses a credit card and I am very aware of credit card protection. Is this similar to the old days when you bought an auto part or tool and some lifetime warrantee for $1.50? The problem was good luck collecting on it!! Thanks to all who can further explain this. And no, I opt out of it as many new items has manufactures warrantee.