Why might someone i don't know want to confirm where i live?

[Jeremy]

All troll's yahoo will take action so im 22 and i had someone knock on my door asking for me by name i have no clue who this is idk any mexicans and i went to the door nobody was there...this isnt a made up story and i do have bad blood with some people from years ago can facebook track your address if i blocked it ? I'm more then capable of defending myself but idk if this may be a set up to possible murder ?

[esmerelda]

Well, harassment, anyway.

Facebook "privacy policy" is that you don't have any privacy. NEVER EVER put your personal info on a social site.

I wouldn't just say it's Facebook. The internet is Swiss Cheese when it comes to protecting personal info.