Comment Spam
Good god. Every few weeks a spammer will latch onto this blog and start piping hot buttered spam into comments on random posts, despite the supposed protection of CAPTCHA (which, incidentally, is an acronym for Completely Automated Public Turing-test to tell Computers and Humans Apart). This results in me receiving in the neighborhood of on hundred emails over the course of a mere couple of hours. THIS results in me getting annoyed and setting Wordpress (THANK GOD for this feature) to automatically block comments which contain parts of the recurring spammy URLS.
So, if you are not a spam-king and are rejected trying to make a valid comment, you might be mentioning something which is taboo. This might be obvious (e.g., viagra, day-trading, etc…) or not so obvious (e.g. groups.yahoo.com) so drop me a line via the contact form if it’s problematic.
On the other hand, if you are a spam-king, go die in a fire.

August 27th, 2008 at 1:35 pm
I was having a similar onslaught of comment spam on my wordpress blog (though not quite as bad as your case) up until a few months ago when I installed the Akismet plugin. Seems to be working great for me. I’d recommend checking it out.
Chandler
August 27th, 2008 at 1:43 pm
Thanks for the tip! I just activated it, we’ll see what happens…