What does Bookmark mean?
Bookmark is so that you can find where you left off of a thread.
You bookmark a thread so that when you log in at a later time, you can go directly to your ping page and pick up the thread immediately where you left off previously.
It's something you leave in the book on the page where you stopped reading so you can get back where you left off...but that's not important now.
One hour to go. I'll stay up but I'm going to miss Meet The Plugs in the morning.