Again many organizations are doing much better and there are some outstanding programs out there with compensation. The thing that interns and employers must remember is that the payment is truly in the experience. Pay is great but the experience,training and skill building is the real compensation. Many internships pay but still have interns only doing administrative work. This is not right.
Internships are like apprenticeships or training programs.
Interns should be able to leave an internship with a new or enhance level of skills, new ideas, and a better understanding of that particular career field. What I suggest to interns is to make goals of what you want to accomplish and learn at the internship and make sure you achieve them. Present the goals to the supervisor and make sure they have an understanding of what you are trying to achieve. The supervisor and employees should make sure they do everything possible to ensure that the internship experience is as beneficial as possible. So the true compensation is the experience.