This hits close to home for me. My wife is currently going through the process to get a one-year internship to for her psychology doctorate, which is required for graduation. Having to pay for the privilege is an understatement - her university counts this as a 'class' so the tuition cost for her to turn in some paperwork at the end of the year will be about $3000. In addition, with gas at $4/gallon, there'll be about a $200/mo commute cost for the next year. So far the internships she's looked at pay a $5000 stipend for the whole year.

Of course that pales in comparison to the cost for child care for this year; most of the child care we've looked at in the Bay Area is ~$1700/mo, so her internship is going to cost us about $20,000.

I don't see this system changing anytime soon. As it stands, there are fewer internship slots than there are students. Because it is so competitive, my wife has already been declined by two agencies which had openings directly related to her thesis. I already don't understand how more placements aren't willing to get nearly-free labor, so forcing employers to pay some kind of minimum wage for interns will only reduce the number of slots available to students. Indeed, in addition to all of the indirect costs (child care, etc) we would gladly write someone a check for her to have an internship in the area so that she can finish this year. If she is deferred because there are no placements, it is another year before she starts a "real job".