Ok, it's not tamper-proof, but if I'm pretty sure that my friend that mailed me a amazon.com link is not attempting a cheap phishing attack, I can recognize the

Ok, it's not tamper-proof, but if I'm pretty sure that my friend that mailed me a amazon.com link is not attempting a cheap phishing attack, I can recognize the product directly from the email body. I would call this human friendly, IMHO.