Hard to describe... But on other (lesser!) messageboards, you can cut/paste other posts into your post and they appear in different formatting.
Doesn't have to be fancy-schmancy -- one messageboard just allows you to insert a > before the text, and it indents all of it.
It makes it MUCH EASIER to see immediately that you're quoting someone else's words.
It really helps when you want to respond to a previous post, even just 2 or 3 lines of it.
Thank you 