How many internships??

I don’t think that you should be in that much of a frenzy since you just graduated in December. If you graduated in December ‘05 or something like that then I would say you should be concerned or perhaps look into another field.
I think that it’s a good sign that you have been getting interviews so obviously you have a good enough resume to get called in for interviews which is a positive sign. There are some people who have good experience but their resumes are laid out and organized so poorly that they do not get called in for interviews so you are ahead of the game in that sense. I take it that you want to work on the print side of things, have you applied for online positions as well? You need to be applying to any and every editorial position that you find to be remotely interesting at both large and small publishing companies. Apply for both print and online editorial positions. Apply for fashion, beauty and editorial assistant positions. Pitch like crazy and follow up with former employers to see if they know of any open positions. Apply for jobs that have an editorial component to them that aren’t necessarily within the magazine/publishing field - sometimes it takes a few months to land a job (or even a year) in this industry and in my opinion, it looks better to be employed and doing something then sitting around looking for a job. It’s easier to find a job when you are employed than it is if you’re unemployed. Since you graduated in December, you can easily get away with being unemployed until April/May since a lot of people don’t start looking for jobs right away after college. I know my original plan when I graduated from college a couple of years ago was to sit around and do nothing and maybe write an article or two a month (I felt that I worked hard in college and deserved a decent break) but I got bored and started doing a bit of freelance writing for a local publication and then took a part time editorial job with a marketing company until I landed my first full time freelance gig. I still do not have a full time-salaried position but do have a steady income that I am quite thankful for (I work full time freelance for website and do some random editorial work on the side). I have a feeling that I’m not really making any sense and I’m sorry about that but the point that I’m trying to get across is that you need to not focus on getting your dream job but getting A JOB that has an editorial/online component to it. It’s a pretty well known fact that you are not a desirable candidate for a job if you are unemployed. Employed people are more desirable candidates than the unemployed if that makes any sense.
Please let me know if you have any other questions and I’d be more than happy to help you. As I said before, I know that a lot of people on the board probably will disagree with me but you cannot have your head up your arse, you have to be practical and realistic when applying for jobs considering the fact that the economy is going downhill. I’m not saying giving up on your dream, but be practical and cast a wide net.