I have been inundated with Spam, with peaks of 1,400+ spam requests per day. I'm experimenting with various work-arounds. Mollom has not helped enough, so I'm trying Disqus and Akismet. Right now I have disabled old comments and enabled Disqus. This means old comments are no longer available. I might do a migration in the future, but during my testing phase, I don't think it's worth it.
So if your pithy comment is currently not available, please don't be offended. Blame the evil comment spammers... or my ineptitude.