A method of establishing a community including a first mobile communication device user and a second mobile communication device user is disclosed. The method includes receiving a first message from the first mobile communication device user and receiving a second message from the second mobile communication device user. The method further includes parsing the first message and the second message to determine a first user identifier and a first user-generated key and a second user identifier and a second user-generated key respectively. Furthermore, the method includes calculating a matching probability between the first mobile communication device user and the second mobile communication device user based on at least one of a proximity of distance, a proximity of time of the receipt of messages, and matching of the user-generated keys.