Friend codes are allowed to be given out on the forums or in PMs. However, TBT is not responsible if someone ruins you're town or does something inappropriate during online game play. Remember that you can boot people out of your town if they are causing trouble. We recommend that you don't add random people to your friend roster. Thank you.
Also, don't expect to just come here and have people exchange FCs with you. Try to get to know people a bit, then exchange...it'll work out much better.