Hi Matiasmat! My students are nearly the same age as yours. They used to want to have pen pals a few years ago. I don �t know why but our students are not very eager to write to teenagers from different countries anymore. The main reason I guess is  the INTERNET. They say writing is a burden for them. They prefer chat rooms or e-mail. I try ro persuade them to find pen pals , unfortunately I usually fail:) As I can see there are not too many replies to your question. So this is a common problem of us all.