Depends on the topic and what the spinoff is. I mean, we treat topics here like regular conversations. Sometimes they stay on topic and sometimes they veer wildly in another direction. Moderation ain't got nothing to do with it, unless the trolling gets reported and nobody does anything about it. But we can't go into all threads and we sometimes miss these.
And frankly I've been on boards with heavy moderation where off-topic comments are deleted and I think that they are missing out.
So yeah, we go off topic a lot and frankly I'm okay with it.