Scaredpoet - I dont do any of those (like stored cc info. for online purchases, banking, gps location etc.) that you mentioned using the iphone.
What do you mean? -
"is tied into Apple's datacenters through iTunes the very moment it's activated." I dont think the device is always connected to apple datacenters? is it? (maybe the native weather app perhaps?!) other than that my understanding is using wifi or 3g the device connects directly to the IP that you call for. So, the ISP - comcast or AT&T will have all your information (like always), but not Apple.
See, I like Apple. The question is not about Apple, or who is bad. All big corporations are the same. In fact Google and Apple are better than, say, "big telecom giants and insurance giants". They are PURE evil. Apple and Google is not there. At least not yet!
Usually i am cautious.
My question is simple: When you can give it to one company and get the iphone rather than 2 companies, why not choose that option?! I am exploring from that angle.
I agree with cocoapuffs, that unfortunately your SSN is accessible everywhere. If you ever worked in a big company, then you probably heard about ChoicePoint - the "master evil" of all - storing accessing and distributing all personal information for corporate greed purposes. In a nutshell, we live in a society where you almost can't get away from these "necessary evils".
calvy - You are right. In best buy the guy puts in a system to see if your credit is approved. (You don't actually know if it is BestBuy system or ATT system- we simply have faith or keep a blind eye in thinking it is only att systems)

which is ok. there is no way around it. Lets assume the same thing happens at an apple retail store as well. But how about Apple ONLINE store? The control is still under "apple.com/webojects.." URL. It is actually a javabeans or java object that collects information, you don't know if it simply pass a SOAP or XML string back to ATT systems, or it stores somewhere in a database.
See you enter the SSN in the first page. When you click "submit" a HTTP post occurs. At which point your address is verified. Then on two subsequent pages you select other information (like rate plan, verifying the accuracy of address, etc.), and not until the last page your information is actually sent to ATT for credit check. In between there are atleast 3-4 HTTP posts that happen. Now you never know, from the first screen when you put in your SSN, if it is kept in a Session variable or put in a database until the actual passthrough happens 4 pages down the road!
Guys, this is NOT about paranoia, this is simply exploring options and understanding what happens in the back. If they do store it, then they are obligated to TELL consumers that, this information in being stored, like in their privacy policy. Apple is very secretive company. No transparency at all. This is not good for consumers. Just because we all love their products, doesn't mean we have to put up with "EVERY" thing they do and say!