1. College clubs usually send out weekly emails to students and if you give them a creative template, they can easily forward to their entire list with a click of a button in a dedicated email.

(excellent guide for writing persuasive emails like that here: http://socialtriggers.com/persuasion-tips-help/)

A lot of these clubs need to raise funds, so they will be happy to incorporate youZingit as part of their activities; in addition, they will be happy to add value (and money!) to their members by giving them an opportunity to be creative and get paid.

Here are several more groups:

http://www.techmediaclub.com/

http://hbseclub.com/

http://www.hbs.edu/mba/student-life/activities-government-and-clubs/Pages/club-details.aspx?name=design

http://olga-education.wix.com/secb

http://www.bc.edu/bc_org/svp/st_org/mktacad/bostoncollegemarketingacademyhome.html

2. Seek out sites like this one:

http://Studenomics.com/

They, too, send out newsletters that goes out to your ideal contingent -- you will not only get traffic, but also engagement, because the kids on these lists want to make money, or get experience -- or both. At the end of the day, you don't really need a huge email list of inactive users. You need active/willing users who will add great content to your website, which creates the value that companies and brands are after.  

Best,

~T