How to protect your Instagram photos 12/19/12

 The new rules of Instagram would allow the company to sell your images to outside parties to use however they please. Though instagram said that that's not what they meant and that it will "modify specific parts" of the new terms to make its intentions clearer. Though your private settings will remain the same too.
If you're bothered by the idea of someone making money off your creative work on Instagram, thats a different issue. You're using a free service, and as Instagram said Tuesday in its blog post: "From the start, Instagram was created to become a business."  If you have an issue with that than might as well stop using Instagram.