This is partly because many people write poor ads, and then place them in the wrong venues. Write your personal ad around conversation starters.
E.g., writing that you're new in town prompts a variety of questions, such as "Where did you move from?
E.g., an incarcerated woman could write that she committed a crime when she was immature, but prison has helped her grow and now she's sorry for what she'd done.
This leads to asking about the crime, what prison has taught her, etc. Disclose an unattractive feature in a way that shows your good character.
Showing that you have a good character will make people love you.