Public messages are where you can voice your problems, needs or rants. It's where others in the community can get to know you and find out more about you. Also try to personalize you home page and be open about yourself without giving out too much information. Privacy is best to keep you safe. That's why one of the rules on this site is not to post personal information on the public areas.
That is where the one to one posts come in. If someone contacts you then you can reply with some information, but feel them out first, remember to think of your safety first. Once you are more comfortable you can move forward with things. But always remember to respect others privacy.
There are some posters that are sending one to one messages to people and asking them to help them directly BEFORE being contacted. This is sorta like spamming - contacting a stranger without their permission. That could start trouble if people start to complain about it.
Never randomly contact someone privately to demand, beg or aggressively ask for help - it's not right.
Others on here are in bad situations, respect their privacy and don't one to one unless someone contacts you to ask about your situation. If you post in the public areas, if someone can offer help or information they will privately or publicly message you. But don't spam others in the community, we've lost some members here due to these kinds of actions. They just don't come around as much...because they feel violated or disrespected.
If someone rudely demands my help, I will block them. I'm not in the best situation myself. But for someone that's a friend, I will do whatever I can to help - or I'll find where they may get help.
Brightest blessings to all and respect one another - Happy Holidays!