Aaron says, in the comments:
You’d better put a captcha or something on here soon. I predict that you can survive about 15 days without it before each and every post is overrun with spam comments.
Call it an experiment. I started this blog last Thursday. If by next Friday I don’t have bot spam then… well, I guess I’ll continue to be lazy. If I start to see some then I’ll know that the world has discovered my existence and put up a CAPTCHA.
I’m using Typo as my blog software, which is written in Ruby on Rails, which I know well, so theoretically I could go in and hack together my own solution. I wrote a math CAPTCHA some time ago as an experiment; maybe it’s time to dust it off.