Supercharge your DIY CDN with mod_expires, mod_deflate, and then lock it down a bit.

.htaccess

# Security
Options -Indexes
<IfModule mod_rewrite.c>
 RewriteEngine On
 RewriteRule \.bat$ - [R=404]
</IfModule>

# Leverage Browser Caching
<IfModule mod_expires.c>
# Enable Expirations
ExpiresActive On

# Default Expiration Time
ExpiresDefault "access plus 1 month"

# Expiration for Images
ExpiresByType image/gif "access plus 1 month"
ExpiresByType image/png "access plus 1 month"
ExpiresByType image/jpg "access plus 1 month"
ExpiresByType image/jpeg "access plus 1 month"

# Expiration for CSS
ExpiresByType text/css "access plus 1 month"

# Expiration for JavaScript
ExpiresByType application/javascript "access plus 1 month"
</IfModule>

# Gzip
<ifmodule mod_deflate.c>
AddOutputFilterByType DEFLATE text/text text/html text/plain text/xml text/css application/x-javascript application/javascript text/javascript
</ifmodule>
#End Gzip