Many apologies to everyone who has been having problems commenting here, which I understand have been accelerating recently. The “you’re posting too fast” message is something a lot of people are getting.
It seems this is a problem with the Patheos commenting system—it’s that there are too many comments total being posted on all Patheos blogs in that moment, not that an individual commenter is commenting too quickly. I am told that they will be doing a system-wide fix to resolve this problem sometime soon.
And once again, sorry for the trouble!