I'm the blog post author. I haven't disabled comments (I welcome them) and I don't see any pending ones that I need to approve. I'm not super happy with Blogger, so I'm going to blame it on that. There is one other comment on this post, so the problem probably has to do with the "Comment As" choice and whether you are logged in to that service.

I tried posting before authenticating with my google account; it sent me to google to log in, I did, I returned, comment nowhere, but I was logged in this time. So I went ahead again, commented again, didn't appear. Weird.

Btw I read somewhere that it's best use N-1 cpu-s for actual work and spare the last one for the scheduler so that the goroutines will not be reassigned to different threads thus cpus all the time because that means lots of memory movement. I suspect that was your 9th goroutine.