Thanks to my boss David Witzel for pointing out that my comments system was broken when he tried to post in the post about soccer being the most exciting sport.
Turns out, when I tweaked the system on tuesday and hid the subject field (instead of removing) I didn’t test. The processor was expecting the subject field to be passed, and since it was required, the action would fail and you’d get a cryptic “Errors encountered” without the helpful “Subject required” message near the now non-existant field.
All is well again.