So, I saw a "trend", I guess, called "World Politics" with a picture of Obama bein' cool (like all other pictures of Obama...that dude's definitely got cool down), clicked it, and found...nothing? I mean there was a page there, but there was just a picture of a couple of foreign dudes (World Politics...makes sense I guess) and a random video. And then I felt an overwhelming feeling of, "I want those 30 seconds back".
So, reading the comments here, I'm beginning to grasp the concept of the site, and I now realize why I was so disappointed by the content I saw: It was generated by an idiot user, the most common creature in the known universe. So, the system needs to be better at solving the hard problem of helping idiot users create something useful.
Your site design is nice, if a bit busy.
The "browse" page is a much better overview than your front page, which I found intimidating and confusing. Browse, while it could be mistaken for "just another social news site" is actually comprehensible to me, and makes your site seem more interesting...it also seems to allow the genuinely interesting stuff to rise to the top, so I don't wind up on the nonsensical "World Politics" page that has nothing interesting to look at or read.
I think maybe this is a case where simplifying your application would be a net positive. Easier said than done, I know, as I'm sure every little feature on the site had someone campaigning for it at some point in the devel/beta cycle. But new users show up and see an explosion of confusing concepts and no clear entry point to get involved.