Interesting, I noticed the threads were mostly all broken as well.
However, it looks like the site has a really smart URL auto-completion thing going on I haven't seen before.
You can mouse over the broken link and see the topic number.
Put the topic number in the URL and add a dash and forward slash.
Hit return.
The website autocompletes with the correct URL.
For example, broken link, first one under Guides:
Guides [Guide] Making your USB Bootable - Psychosis
If you click on it you will get:
Broken Link: http://hak5.org/forums/?showtopic=14111
Mousing over it will also show the topic number
Now sub in the topic number and a dash and forward slash in the current url:
i.e.:
https://forums.hak5.org/index.php?/topic/14111-/
This will redirect to this:
https://forums.hak5.org/index.php?/topic/14111-guide-making-your-usb-bootable/
Pretty neat.
For some reason
https://forums.hak5.org/index.php?/topic/14111/
(without the dash at the end of 14111) doesn't work.
Have fun. Hope it makes sense.
-e