rogerd - 2:12 am on Mar 16, 2006 (gmt 0) Welcome to WebmasterWorld, JustMeAgain!
That's a good point, JustMeAgain. There are really two kinds of spammers, human and bot, and what works on one won't work on the other. Steps you take to make links useless may cut down on human spam, but the bots will just post away and not worry about it. And the simplest verification steps that require thought will frustrate bots but not slow a human down.
Welcome to WebmasterWorld, JustMeAgain!