The bizhat.com admins get money from people click on advertisements as you can see here on their forum.
The moderator team are special people that chose to help those who need it. (more like volenteers).

The money is generated on every click from here, if you click on like a google add there is a link that it goes to instead of the direct search. Google pays penies or Cent's on every click.
And the forum here is quite busy so the admins depened on us and their own salary to be able to pay for our free services.