Between the really obviously bad stuff (people being physically assaulted in general, whether at an event or not, and having a decent way to handle reporting for that kind of thing), and stupid things (people telling jokes privately in an audience and being overheard), there are some situations where I actually appreciate learning how some behavior might be unintentionally offensive and could be easily corrected.<p>Essentially in the same category as wanting to learn about some people being colorblind and how using certain color combinations alone for UI distinctions is thus a bad idea, or that scheduling a developer event for which you'd like to attract students around traditional finals time is probably a bad idea.<p>Whether or not some behavior is "wrong", it's still good to know if certain things have consequences you don't want. I think every developer community wants to be as inclusive to competent/interested people as possible, so when there are no or low cost ways to make an event more appealing, that's great.