Greetings, I've been experimenting with APRS recently. I stumbled upon the bulletins (https://aprs.fi/bulletin/). I couldn't get much information on how they work: Are the bulletins updated by someone? Are they automatically updated? Is it possible for me to post a message at an existing bulletin (message to the bulletin ID)? Is it possible for me to create a bulletin for, say, divulge contests in my area? Regards, Daniel.