Originally Posted by
smontanaro
My opinion is that the date of last post (or start of thread) doesn't matter. If your reply is related to the topic, fire away. It's much easier to deal with details in a single thread than multiple threads.
I agree. However, it might be helpful to advise readers that you are resurrecting an old thread. That might prompt readers to read the old posts to minimize asking the same questions or providing the same information.