onionservice; HiddenServiceEnableIntroDoS* settings

THis is Documentation problem.

1. I have read all docs and lists.tpo emails but still can't understand what "HiddenServiceEnableIntroDoS" actually do for service operators.

2. The default you're suggesting, 25,200 , is really wrong because my service (email, forum, webchat, and Irc for 6K+ anons) works fine with:

HiddenServiceEnableIntroDoSDefense 1 HiddenServiceEnableIntroDoSRatePerSec 15 HiddenServiceEnableIntroDoSBurstPerSec 60

3. Plz update your blog post to explain clearly what the HiddenServiceEnableIntroDoS* actually do. Does this limit users per seconds?