If you send OK to your friend's request, your friend's mobile number is saved in a separate list called "OK List". This list shows the list of people whom you have given a permission to find you. To check who is in your OK List (i.e., who can find me?) just send "listok" to 32001.   If you received "ok" request from your friend, but you have not sent "ok" yet, this friend will be displayed with "(waiting)" flag in your OK List. This means your friend is still waiting for the OK permission from you. You can send send "ok" message to 32001 to allow your friend to find your location. If you no longer want to allow your friend to find your location, you can simply send "delok <friend's mobile number>" to 32001.