Just use the chat button at the the bottom of your screen;the one that says chat with other players.That should work.Of course you have to check back regularly because it takes a while for anyone to respond.But trust me, it is well worth your while if you are patient.Just come back you know.Enjoy.

One more thing to be specific.You have to make up a title of what your writing about and then write it in the empty larger box below.If you just want to respond to someone else then you have to click under their topic and click on reply.Then you just type in the large box what you wish to say.Dont forget you have to submit any of what I mentioned above after you have wrote whatever it is you wrote.Good luck.