My idea is simple. Add the date of first post on the forum index so you can see when the original post was submitted.
For example, in the Welcome & Join section index, you can see who the OP was, how long ago the most recent post was, and how many replies the thread has.
Newer posts could possibly go down the index and get lost as people respond to earlier ones, but with the date of the original post on there, hopefully people will see the actual latest posts, not the latest ones responded to.
Thanks for reading and voting :)