InsaneJournal does not believe in censorship beyond the letter of the law, so all material is allowed on the site. As quoted in a news post made May 31st, 2007, site owner Squeaky said "We will not remove any content from the site unless we receive an official DMCA take down notice or are contacted by an official legal agency notifying us of illegal activity." (source: https://asylums.insanejournal.com/announcements/31922.html).
InsaneJournal has a number of users who are under-aged and cannot legally view explicit material. Due to this, Insanejournal would like to ask that posts to non-age restricted asylums, comments in other user's journals, and default user icons be kept free of explicit content. In order to protect our under-aged users, Insanejournal would like to ask you (NOT require) to help keep explicit material out of the eyesight of under-aged readers by using one of the following two methods:
Use a Cut Tag: If you use an LJ-cut stating there is explicit material contained within, an under-aged user is less likely to encounter it. LJ-cut tags are used to hide part, or all, of an entry. Information on LJ-specific tags and what they are used for can be found at the following FAQ: https://www.insanejournal.com/support/faqbrowse.bml?faqid=49
Once again, these methods are only suggested. It is not a requirement to Friends-lock or use LJ-cut tags when it comes to explicit material.
If you frequently post content to your journal that is considered of an "adult nature", InsaneJournal asks that you place a warning in your user information (https://www.insanejournal.com/manage/profile) to warn underage users should not view your journal. This isn't mandatory, but can serve to protect both yourself and InsaneJournal.
If you are the maintainer of an asylum in which users regularly post explicit images, you must monitor the membership of your asylum carefully to make sure that all of your members are of legal age to view such material. Again, this is to protect both you and InsaneJournal.