I have just been reading a thread on the Affiliates4u forum started by Jess Luthi P3P does it matter any more? which is very worrying this quote from Jess stood out:

… 9 out of 10 merchants site who dont have P3P but who have an affiliate program, I could not add a product to the basket

As I commented on that thread it is yet another reason for shopping cart abandonment, which equals less sales for merchant, less commission for affiliates and less override for networks.

For the record the other posts where I have touched on shopping card abandonment are here
Christmas is coming checkout your checkouts and Why do people abandon online shopping baskets?

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affiliate marketing