Translation of inmaduro

Are you a man or a woman? You have no picture in your profile, and I do not know whether the user name loli2938 belongs to a man or a woman, but actually it does not matter to me. I am here for the Spanish.
It is called Facebook viral marketing. I'm 62 and it's somewhat mystifying, but my two boys are using it continuously. What I'm a bit afraid of is the personal information they send to everybody. It has no privacy.
I once had a lesson with a private teacher, but unfortunately she could not come regularly. She was always sick, then I have visited a school in Andalusia, which was worthless, since we talked only German.