1) Always use minimum digipath.
        2) Fixed stations should beacon every 20 to 60 minutes.
        3) Fixed weather stations should beacon every 9 minutes.
        4) Mobiles may beacon once a minute for special events or every 3 to 5 minutes for normal ops.
        5) When a mobile station arrives at its destination its beacon should be stopped or adjusted to fixed station rate.
        6) Use APRS VIA WIDE in metro areas. Better to specify a unique digi (callsign).
        7) Use APRS VIA WIDE, WIDE for regional coverage. Better to specify fixed call in place of second WIDE.
        8) Fixed stations may set path of APRS VIA RELAY, WIDE. When local  relay is found a specific callsign should replace first digi.
        9) For information for a national audience use APRS VIA WIDE, GATE. This is for rare occasions.
       10) Seldom do you use APRS VIA WIDE, WIDE, WIDE. Use this only from remote areas if it is your only option.
       11) Extended use of keyboard-to-keybaord contacts is discouraged, especially on HF.
       12) All fixed stations should set the TNC's MYALIAS os similar alias command to RELAY.
       13) Mobile stations should use RELAY, WIDE or RELAY, WIDE, WIDE in cities.
       14) Do not enable GATEWAY function of your TNC unless you're the only GATEWAY.
       15) Never digi on HF unless both stations can't hear each other.
       16) Whenever possible use a direct path to chat.
       17) If a direct path is not practical use a specific digi callsign.
       18) When events or info are intended for a specific area use exact callsigns of the digi's necessary for reliable communications.
       19) If your info is not of value hundred miles away, restrict the path.
       20) Consult local experts or experiment, these are only guidelines.