This hack works best if you have all hobbies, items, and places required to finish the Social Tasks. I have ALL hobbies, pet items, etc in my town but could never find the stuff in my friends towns.

1. Have two Facebook accounts (like yours and your kids or spouse)
2. Log in to one of the accounts
3. Log in to Sims Free play on that Facebook account
4. Go to the party boat and see friends list.
5. Exit Sims Freeplay
6. Log out of Facebook and log into other account
7. Enter Sims Freeplay, and Log out of the Facebook link, then log back in to the Facebook link using other account.
8. Go to friends list via Party Boat and you'll see your first Facebook account as a friend.
9. Go to their town (It will be an exact copy of yours)
10. Choose a Sim to go there.
11. Remember that Sim and do the Social tasks
12. Go back to your town
13. When going to your Social task Sim, remember which one it was and choose Another Sim Town.
14. You will always go to your own town!