For a while I was thinking of adding a CAPTCHA to this blog but the comment spam was pretty low. It seemed easier to remove spam manually, than modify and re-compile .Text.

Last week the spam got silly, so I now use Miguel Jimenez's HIP-CAPTCHA control:

No compilation of the .Text source is required! It is very simple to use and will only take you about five minutes to install. What that I hear some say? 'But I don't use .Text, what can I do to stop comment spam?' Implementing Miguel's control is done via a httphandler, and should work with any ASP.Net form.
The dll and instructions can be downloaded here:

http://blogs.clearscreen.com/migs/archive/2004/11/10/575.aspx

Thanks Miguel!!!