How much blushing does a story need to have to be on-topic for this group? Most of my clop stories include some because it's cute (and cute clop is best clop), but it's not a major focus of the story.

4369046 I would say enough for the readers to take notice and think "hmm... there's quite a bit of blushing in this story". It might be difficult to get a reader to actually notice blushing when they're distracted by all the... cloppyness.

4369046 I'd say just as long as it's noticed and not a two word mention in 10,000 word. I wouldn't worry too much about "how much." Just add what seems nice.