If the thread is still active in the forums and has not been archived then as far as I’m concerned its more than fair game to comment on. Though of course use some common sense when it comes to posting on topics with titles similar to “London Invasion 2014” that thread may be dead for a reason (though if it hasn’t been archived then its most likely just been overlooked)
It also look a lot of self control not to just leave this thread for several months then reply “This long”
I was thinking more about general discussions. It’s probably obvious when invasion and event posts are dead so no worries there.
I just wanted to make sure since I’ve been in other forums and a common thing is to “not revive old posts.” Which really varies from forum to forum depending on how many people use it. But as mentioned, it’s quiet here so I figured it might not be too strict, but wouldn’t hurt to ask just in case.