I already checked with the admin there, it is confirm that the credits can not be direct converted to cash, if you want to convert to cash, you have to either trade your credit with the members there, or trade it to admin for advertisement used. I don't think it is worth our time to post there.
It's not good indeed. Then I don't think it's worth calling a paid to post forum. I remember the site was claiming 8 cents per post when it was launched, but now it is not ready to offer even 1 cent per post. I don't think any member will hang around the forum.