Artists, Illustrators, Photogs, Graphic designers...
I'm posting this to pledge allegiance with all of you. Do not work for free - and more - avoid working for exaggerated low rates or so called internships. If you are a student, there should be more than enough resources at your school to present internship possibilities.
If you have an interest in a project that can't pay you right away - suggest to the poster that you may be interested in signing on as an equity partner. Meaning you are going into a business arrangement with them that can benefit you somewhere down the line.
If you are really itching to get some new work out there, try a collaboration with some other creative working in a complimentary form - graphics people need photographers, illustrators need zine or small press publishers, etc...
So often I see posters asking for interns, and then go on to offer a JOB description in the body of the post. Legally an internship is supposed to benefit the intern in her or his area of interest. For the business owner, this creates a highly qualified candidate for their particular business. That's the way it was done for hundred of years, and it works.
Contrary to popular belief, art, expression, and creativity are extremely important. This people that belittle your work with comments like: " if you are good with ( insert medium here ), it shouldn't take much time!" Are fucking dreamers, to be frank. If their business is legit and really going places, paying for distinctive quality work will not be a problem, trust.
Best of luck to you all, and hello to the other art and craftspeople posting below me!