If you can somehow bring something new to the thread/get a conversation going in the thread before mods get to it, sure! So, you can't just respond to the OP as though this is a normal post, you could reformulate the OP's original concept maybe, or bring up something that could stand on its own legs as a topic. The point is, if you can start a conversation back up with whatever you post, it should be okay?
Alright, my question:
Would you rather be a Colossal Fossil, a Gigantic Titanic, or a Lube Cube?