Now all the main URL's are automatically re-written so the better reflect the post or thread they relate to. Plus the search engines like this
Instead of: ... forums/showthread.php?t=22480
You now get: ... forums/airline-info/22482-aeropuerto-cibao-almost-completed.html
Instead of: ... forums/showthread.php?t=22480
You now get: ... forums/airline-info/22482-aeropuerto-cibao-almost-completed.html