Of course, here it is:

Once we have put you in contact with a new pen pal we cannot be held responsible for the outcome of any contact of any kind made between you. By confirming you have read this disclaimer you are acknowledging that you have permission to join this service.

We do hope you use common sense and if you decide you feel uncomfortable giving your address out, don’t. We wouldn’t want you to do anything you don’t feel 100% about. Your participation is totally voluntary.

If you are sending gifts with your letter remember to check that there are no international restrictions on posting said item.