crazedmonkey.com
This is not technically a via-trail (considering that my site has been down for a couple of days now, but more of a google-trail, I suppose. I came upon this site in my search for how to keep bots from hammering my site. What his particular entry mentions is how to control when Blosxom serves a static page, and when it serves a dynamic page, by messing with mod_rewrite rules. Another interesting ramification of this entry is that you can control what are valid categories. (For example, I could probably use this to turn away all those bots.)