phpBB ignores the PRE tags and simply prints the text for it.
Also, it won't display the URLs properly if the URL path is surrounded by quotes. If you remove the quotes, it works just fine.
The two phpBB boards I tested on simply won't display a URL that has an exclamation in the URL path.
Invision Powerboard 1.3 ignores the PRE tags and simply prints the text for it.
Everything else works just fine, including the quotes in the URL paths as well as the exclamation points in the URL path.
SimpleMachines Forums 1.1.2 works fine all the way around. Of course, that's what is used here at WoWAce. :P