This is a copy-paste from one of the older threads here (someone has nicely summed up the site rules):
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Posting one of these things can trigger a review, delete or block :
- over excessive use of foul language
- personal insults and derogatory language (towards groups or individuals)
- use of names or personal identifiers (except for naming already public figures)
- bullying, trolling and spamming
- direct advertising
- asking for votes of any kind (political, union, stock votes)
- off-topics like discussing politics and religion
Site mods usually just delete the post in violation or a whole thread, but sometimes they put you on blacklist/block you from posting any further (can be skipped by using VPN)