Instagram users are fighting back against recent changes to the social photo-sharing service's Terms of Service, scheduled to go into effect January 16.

A proposed class action lawsuit was filed in a San Francisco federal court Friday, reports Reuters

The lawsuit claims breach of contract against Instagram, following ToS changes announced last week that specifically seemed to imply it would begin selling users' images. Though the app maker seemed to retract that statement once Instagramers responded strongly to the proposed changes, the new lawsuit seems further proof users remain concerned about the direction the app is taking since Facebook's acquisition earlier this year.

We recently broke down steps to take whether you decide to keep or delete your Instagram account.