ive never used latitude.... but i know on the android facebook app... on the main menu in the middle i think there is "CHECK IN"
from there it gps your location and or you can type it in and it will find it.. you push check it..and or can tag who is with you.
Go to your Facebook for Android app. Click "Places" (it's the one in the middle) then in the upper right hand corner it will say "check in" it will find locations near you or you can search for one or create your own. Click check in again and you can tag people with you if you want.