20.
Edit: I don't see the point in increasing it, really. I rarely need to view more than 20 posts per thread. Keeping it spaced it helps me keep better track of where certain posts are in large threads and reduces the amount of scrolling I have to do.
Edit: I don't see the point in increasing it, really. I rarely need to view more than 20 posts per thread. Keeping it spaced it helps me keep better track of where certain posts are in large threads and reduces the amount of scrolling I have to do.