Do people really make money signing up for these data entry sites?

I don't want the BS people saying yeah, try my site. I want to know if people have really made money signing up for one of these sites.

Do people really make money signing up for these data entry sites?
I have tried surveys, data entry and envelop stuffing and didn't get more than extra spam and wasted time. I'm not saying that there aren't any but just do your research first. I you can't track a companies credentials then they probably don't exhist. Good luck!