You're a commodity on the internet when you volunteer your personal information in exchange for use of a free service. Unless you're paying for the product, you are the product. Get real, folks.
Agree with personal info as product. I think there's a few things to be upset about w/ Instagram changes though. More worried about distribution and ownership rights for content. Working for a media company and being a photographer who has sold photos, I'm concerned that the new wording implies it will be a reality for them to sell photos I've shared. Granted they are lo-res and use filters, but it's content that could go viral and has potential to make me a few bucks. Compare it to YouTube. Free service that offers rev share via AdSense for popular UGC. Or does Google have similar wording that is being ignored for now?