There are about article 500 submissions per day to arxiv [0]. I don't know what the number of monthly active users is for scirate.com, but the density of commen

There are about article 500 submissions per day to arxiv [0]. I don't know what the number of monthly active users is for scirate.com, but the density of comments might be expected to be low. [0] https://arxiv.org/stats/monthly_submissions https://arxiv.org/stats/monthly_submissions