Fill out the job you are looking for and you will get listings in your email box regularly from the sites below. I’ve had students who’ve had success with all of the sites below.
Media bistro is a good site for media related job postings.
The Muse is an interesting site with a fun career guide to Linked in
One of the best know online sites for internship listings, internships.com also has good resume tips and career advice.
Intern Queen is a site that can be useful for landing an internship.
Intern feed is a another spot to look for internships
My edu has job listings that you can review.
If you are interested in a non for profit job, then this is the site for you to review to search for job postings.
This site has many internship postings and also interview tips, etc. for landing the internship after you get the call for an interview.
If you are the entrepreneurial type, then try angel list which has jobs at startups. Might not be any paid spots here, but you will get some strong hands on experience: