Basic text analysis on submission titles. Filter key-words/phrases from showing up on front-page except for logged-in users.Add it in to the ToS, and have an "I Agree" checkbox when submitting content which states that they are aware of the post being flagged, and refer them to the ToS. Implement something that logs filter-circumventing attempts (decided by user-reporting) and ban repeat-offenders. The only downside I can think of is that it can potentially become an arms-race against the filter bot; either that and/or it makes that site look like a complete ghost-town which only the "initiated" would know how to make useful. That last part might actually be silver-lining, who knows. **\*edit:** and make it so that even *once* you log in, you have to go in to user settings to disable the front-page filter. Essentially, making every possible attempt to ensure it looks like the person *went out of their way* to view said content.