Rules are here: http://www.aaroads.com/forum/index.php?topic=992.0
Next time, when you get the notice that the thread is more than 120 days old, take a serious look at the thread and determine if your post on a thread 8 years old is relevant.
Why does it matter how old the thread is? Doesn't it clutter up the site to have multiple threads all on the same topic?
That's actually a question I legitimately have: Two things are frowned uponóreviving old threads, and starting new threads for an existing topic. Where's the acceptable dividing line?
IMO, reviving an old thread is only frowned upon if the bumped post is superflous (see post #6 in this thread). It's up to you to decide where that grey area starts and ends.
Starting a new thread is frowned upon only if the new thread is redundant (eg. "A unique sign!" when the "Unique odd or interesting" thread already exists).