Pass all requests for non-existing files or directories to index.php

RewriteCond        %{REQUEST_FILENAME}        !-f                
RewriteCond        %{REQUEST_FILENAME}        !-d
RewriteRule        ^(.*)$                    index.php        [L]

// redirect domain.com to www.domain.com (or vice versa)
// helps substantially with delicious links and other SEO optimization
// see for discussion

RewriteEngine On
RewriteCond %{HTTP_HOST} ^domain.com$ [NC]
RewriteRule ^(.*)$ http://www.domain.com/$1 [R=301,L]

Upgrades woohoo! Tell those lusers to hold their horses while you happily debug. Some .htaccess magic, just sub in your IP:

<IfModule mod_rewrite.c>
        RewriteEngine On
        # 'under construction' override
        RewriteCond %{REMOTE_ADDR} !^127\.0\.0\.1$
        RewriteRule ^(.*)$ maintenance.html
IfModule>

Rewrites test.example.com/example/path/ to example.com/test/example/path/

This example show the values being passed to FCGI for use by Django.

$HTTP["host"] =~ "([^.]+)\.example\.com" {
  server.document-root = "/users/home/username/domains/example.com/web/public"
  server.errorlog = "/users/home/username/var/log/lighttpd.example_com.error.log" 
  accesslog.filename = "/users/home/username/var/log/lighttpd.example_com.access.log" 

  fastcgi.server = (
    "/main.fcgi" => (
      "main" => (
        "socket" => "/users/home/username/tmp/django/example_com.socket"
      )
    )
  )

  url.rewrite-once = ( "^(/.*)$" => "/main.fcgi/%1/$1" )
  server.error-handler-404 = "/main.fcgi" 
}

Code for an .htaccess file located in a directory containing images (or any other type of file for that matter) to which you want to block hotlinking from blacklisted websites.

RewriteEngine On
RewriteCond %{HTTP_REFERER} ^http://(www\.)?evilwebsite\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://forum\.evilwebsite\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^http://(www\.)?bandwidththieves\.net [NC]
RewriteRule \.(jpeg|jpg|gif|bmp|png|JPEG|JPG|GIF|BMP|PNG)$ http://example.com/pwnt.gif [L]

example.com/pwnt.gif

is the location of the file you want to serve in place of the hotlinked image. Mine just says 'PWNT'.

Alternate last line to simply block the images from being hotlinked instead of serving a replacement image:

RewriteRule \.(jpeg|jpg|gif|bmp|png|JPEG|JPG|GIF|BMP|PNG)$ - [F]