I'm pretty certain that the board will track unread vs. read over a period of time. You can also see within your personal profile every post you've added. However, I've yet to see them come together as it's "alot" of data to track for 160,000+ posts and 2600+ members. That being said, I'll check into it.

For reference, I don't write the software, just manage the server which it runs on. The moderators manage the day-to-day settings. It's a pretty stock configuration, actually.