http://www.opiniojuris.org/posts/1176084710.shtml
This will really interest you.
“Opinio Juris is seeking its first ever intern(s) for this coming summer for a full or part time position (at least 10 hours a week). We’d expect the position to run from June 1- August 15. Candidates should have superior web skills accompanied by an interest in international law as well as graduate- or law-school level training in that field. Unlike many other internships, there’s flexibility in when you would work, not to mention there’s no office to report to, plus, we'd like to think were a pretty easy-going group with whom to spend time.”