Customers do notice the logos. I know from first-hand experience. I've been selling my photo-deblurring product on the web for about a year now. I've always pr

Customers do notice the logos. I know from first-hand experience. I've been selling my photo-deblurring product on the web for about a year now. I've always processed payments through Stripe, and I've always served the entire web site using SSL. The green padlock is in the address bar. And yet, back in the early days, I got questions from potential customers several times a month asking if my purchase form was secure. My solution? I added the text "Payments processed securely" and a generic padlock icon near the credit card info part of the purchase form. In the eight months since then, I haven't had a single person ask me whether or not my site was "secure." Silly, but effective.