That is a sad thing in paid to posts forum,when members get tired of posting,the site will be inactive. Maybe the site does not have interesting topics to offers. Isn't it?
Well, I am also a member at this site but I really have low earnings on it.I guess if you would like to expand your friends and socialize then join the site but in terms of earnings it does not go much.
To tell you honestly, earning money online is not that easy. You still need effort and a lot of hard work to profit from the sites that you join. And always be careful of scam sites since they will easily convince you to join.
It is a matter of investigating on sites though, you should know their members and contact them if it is really legit. I have both and earning good from it since I always make sure that the site is really legit.