Financial blogger Barry Ritholtz discusses upcoming changes to Instagram (the popular "app" that adds arty filters to cellphone photo-sharing):
1. Instagram can share information about its users with Facebook, its parent company, as well as outside affiliates and advertisers.
2. You could star in an advertisement — without your knowledge.
3. Underage users are not exempt.
4. Ads may not be labeled as ads.
5. Want to opt out? Delete your account.