>abandoned boards with posts dating back to 2005 and earlier
There's something that makes me unquestionably sad, yet happy to see those sites. To look at a perfectly preserved image of what that place, those people, were like in the recent past. Sometimes, I want to make a post, just to let any future person know that someone else had seen the page. I never do, I don't want to change the site. I want it to be unchanged for the next person who comes across it, whenever that may be.