.htaccess

Options +FollowSymLinks
RewriteEngine On

RewriteCond %{HTTP_HOST} ^www\.24ways\.org$ [NC] 
RewriteRule ^(.*)$ http://24ways.org/$1 [R=301,L]

# ye olde urls
RewriteRule ^advent/(.*)/$ /2005/$1/ [R,L]

# authors
RewriteRule ^authors/$ /authors.php [L]
RewriteRule ^authors/([a-z0-9-]+)/$ /author.php?slug=$1 [L]

# years
RewriteRule ^([0-9][0-9][0-9][0-9])/$ /year.php?year=$1 [L]

# article
RewriteRule ^([0-9][0-9][0-9][0-9])/([a-zA-Z0-9-\.]+)/$ /article.php?year=$1&slug=$2 [L]

# short link 
RewriteRule ^([0-9][0-9][0-9][0-9])([0-9][0-9])/$ /shortlink.php?year=$1&day=$2 [L]

# comment voting
RewriteRule ^vote/(up|down)/c([0-9]+)/$ /vote.php?type=$1&commentID=$2 [L]

# search
RewriteRule ^search/$ /search.php [QSA,L]

# rss
RewriteRule ^rss/$ /rss.php [L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_URI} !(.*)/$
RewriteRule ^(.*)$ /$1/ [L,R=301]