Ask HN: HN Content Filter Stats

Guessing everyone that's been on HN any meaningful duration has since the error message that you're "submitting to fast" - but honestly not sure if it is a good filter; meaning if 80% of the users with reps over 500 get this message on a daily basis, to me this is an issue.

What percentage of submits are rejected by this filter, and are the submitted comments/stories logged and reviewed to see if the filter is working as designed?

___ Here's the exact error message for search engines:

>> "You're submitting too fast. Please slow down. Thanks."