How to monetize a site with variable user content?

I have a website http://www.aggreddit.com/ which allows users to select and quickly view the popular links from reddit subreddits. I was originally using AdSense, but serving was disabled due to the links (content from reddit which I have no control over).

Is there any way around this? People are after all only getting the content they request! Or can anyone suggest alternative advertisers?

I'm not looking to make big money from this, but visitors are growing and I'd like to be able to work on more ideas I have for the site.