Don't Know How Old is "Old"
nwfront99: Has anyone ever determined for sure what constitutes an "old" post that commenting on would cause a ban? I don't want this IP to get banned but I often read the comments up to a day after they are posted.
Don't know how old is "old," but I think Krebs's take on it above (~40 is good all around. I've wondered if it's age or how long since it's been active. A book thread recently spilled over into the following morning, presumably without anyone getting canned.
But as Krebs noted, you probably won't have anyone read a comment placed on a thread that has been inactive a while.
And as said, reading anything won't get you banned.