I would expect every site to be extremely liberal with what they request, since, in this case, there is little to no indication to the user as to what's being sent to whom. Developers are going to add the header to get the data because that's what's necessary to get their stuff working.
Ultimately, P3P comes down to the honor system. Unfortunately, that doesn't work on the internet.
I fail to see why Google is being compared to every other site on the internet.
You would not be surprised if a warez program installed a keylogger on your computer, but you hold Google Chrome to a higher standard. Isn't that true for the internet too? Why equate Google to any other site on the internet?
>Ultimately, P3P comes down to the honor system. Unfortunately, that doesn't work on the internet.
Would you say the same thing if you came to know that Google employees are reading your email for fun and profit?
What do you think about robots.txt then? Isn't that a standard that isn't enforced as well?