According to a survey of legal firms’ caseloads by the UK paper Mirror, Facebook is now citied in one-third of all divorce cases. The evidence gathered on the site ranges from messages that prove infidelity to geo-tagging records and photographic evidence.

“Social media provides an ongoing log of our lives,” said Lyn Ayrton, managing partner of English law firm Lake Legal. “Often, if a partner refers to an impending bonus, a new job offer, or plans for a holiday, it may provide evidence that they are not telling the truth about their financial position. At the very least, it could call their credibility into question. It’s like having a massive public noticeboard.”

Many people don’t think of Facebook as a catalog of their life, but for users who post frequently, that’s exactly what it is. Like it or not, people leave patterns of behavior on the site that can be gathered and interpreted by anyone who has access to their posts – or by Facebook itself. If you’re uncomfortable with that, the only way to avoid this digital life log is to keep some things to yourself and avoid oversharing. Especially, if you intend on filing for divorce. Because you never know what poorly-thought out post could turn up in court.