I have been in my house for over a year and the people I bought it from still have not officially changed their address with the post office (I know, b/c a card would have shown up in my mailbox). I'm not legally allowed to change it for them. I have reminded them with every packet of letters I send on to them, and I am getting tired of forwarding mail to them. But, I feel guilty sticking things back in the mailbox with "no such person at this address." It would be one thing if it was junk mail, but I also get notifications from the dentist, insurance, bank, birthday cards, you name it. What would you do at this point - forward or return to sender?