I was thinking about alternative ways to block comment spam the other day and it occurred to me that there’s potentially a simpler solution than the Invisible Captcha approach I wrote about. The Invisible Captcha control plays upon the fact that most comment spam bots don’t evaluate javascript. However there’s another particular behavioral trait that bots have that can be exploited due to the bots inability to support another browser facility. You see, comment spam bots love form fields. When they encounter a form field, they go into a berserker frenzy (+2 to strength, +2 hp per level, etc...) trying to...