A commenter asked me to check if a comment of his had been sent to the spam corral there to languish in cyber-obscurity for all eternity or until the demise of this site, whichever comes first. Sure enough, there it was cheek-by-jowl with other good comments some of them from commenters whose other comments got through. So I sent them to their rightful places.
I'll have to check the spam file more often. I apologize for not doing so. If you submit a good comment and it doesn't appear, you can always shoot me an e-mail about it.