When you use the mark all forums read option on the index page (main page of the site) it updates all of the forum entries with your ID to the timestamp at that exact moment. This means that all posts in the database at that exact moment are listed as read.
It has nothing to do with what you have read or not.
Willful ignorance of science is not commendable. Refusing to learn the difference between a credible source and a shill is criminally stupid.
Good grief Charlie Brown! This is an eye strain yet once against still not as bad as those darn ez-boards. This sort of reminds me of the buzz haircut. High and tight. It will take some getting used to but I'm not going to complain.