Inbox Message Status Bug
As much as I hate to admit this, there was an Inbox message bug that persisted for a few months. It could mistakenly change the status of Unread messages to Read. It only happened when the message sender re-read the message in their own Sent messages.
It's been fixed but there isn't method to fix the messages that were mistakenly marked Read. This means many of you have messages in your Inbox that you might not have noticed.
So I recommend you double-check your Inbox. It's possible some members have missed a new gaming opportunity.