Another similarity I found were the authors. Most of the articles I checked were written by Indian women.
I went through their guidelines and they do allow the authors to link to their pages or websites. The website doesn't even share its adsense revenue with their authors so it makes me wonder why are people even writing articles for it? The only reason I could think of was accumulate all your articles at one spot so that you can display it as sample to your freelancing clients. Even for that purpose, there are other websites where the authors get paid for their articles like Squidoo, Hubpages and many many more.
I found this behavior very strange.
After all, you're probably following a few hundred people already that aren't doing squat for you.....