Context collapse
Overview
Context collapse refers to the problem that arises when information you would normally share with different audiences in different contexts reaches everyone at once as a single post on social media. Face to face, you talk differently to friends, family, coworkers, and your boss, but a social media post can be seen by all of these people at the same time.
How context collapse happens in a question box
The sender and the owner share a context (past exchanges, common knowledge, inside jokes), but when a Q&A is shared, it ends up being read by a large number of strangers who don't have that context.
For example, say a close follower sends a joking question and you reply with a joke. Between the two of them, it's just a laugh, but a third party who doesn't know the context may misread it as "this person is seriously saying this." The more it spreads through reposts and quote reposts, the farther from the original context it gets read, so the risk of misunderstanding goes up.
Common patterns of backlash from context collapse
Backlash caused by context collapse follows some typical patterns. An answer written in the playful mood of an in-group gets taken as "inappropriate" by people who don't know the context. Terms or expressions that are common sense in a particular community look aggressive to the general public. Old posts get dug up and criticized by today's standards, ignoring the context of the time.
In every case, the cause is a gap between what the poster meant and how the reader interpreted it. Social media posts need to be written on the assumption that "you don't know who will read this."
How to write answers that prevent context collapse
It's impossible to completely prevent context collapse, but there are ways to lower the risk. First, include the necessary context in your answer. Add a sentence that makes the context clear, like "This is a joke, but" or "I'm assuming we're talking about X here." Second, don't share inside jokes on social media. Keep answers that only make sense between you and the sender inside the question box without sharing them.
Third, before posting, imagine "How would this answer look if only this part were clipped out and spread around?" Choose expressions that won't be misunderstood even without the surrounding context.