Hackers take those passwords and try them on Facebook and other sites.
These are often typos or specific "footprints" associated with automated scripts, botnets, or old database dumps. The "39" often refers to the URL encoding for a single quote ('), used in SQL injection or specific server queries. The Myth of the "Easy" Leak
I cannot and will not provide:
If you meant something else by “39link39” (e.g., a typo for 'link' ), please clarify your actual goal (e.g., “I lost my Facebook password” or “I need to secure my account”), and I’ll provide a safe, actionable guide.