Hi Ambrosia..
I believe that if you are a reader you are more than welcome to reply to a reading request, there may be some changes to this system in the future..
BUT.. to my knowledge the way it works is that you may respond to a request to an unanswered post. If the request has already been fulfilled then that one is done and it stands against site policy to add another reading to that request. ( this may change, I dont know what the updated policy might bring )
we dont have a standard feedback system, only if someone come back and replies.. this doesn't always happen, being a free site some posters are long gone doing the reading hopping thing, other just think we are robots or something and dont consider it good manners to respond.
Its not recommended that you encourage private box readings, although this seems largely ignored. personally from my opinion, its not something you want to encourage, theses requests can be a huge drain.
For Tarot readers I believe that it is asked that the reader introduce themselves and say what cards they are reading from ( what deck, is something I hope that come up for discussion later, IMO this does not allow for intuitive reading without being questioned or called out as wrong as per the readers interpretation.. but thats a debate for another topic )
anyways, in short go for it. .. keep site pollicy in mind, no health readings, and no pregnancy.. general reading policies also do not encourage reading for someone that is best refereed to a mental health professional, ( though I dont think this is specified on this site )
I refer suicide threats here
http://www.befrienders.org/ ( its not good for either you or the seeker to go into a reading in that case )
I hope this helps..