Please make it part of your protocol to notify the original poster of a thread regarding WHY the thread was locked.
E.g. Original poster creates a thread and then later realizes it was locked. It can be quite confusing to see a thread you created be locked and you have no idea why.
E.g. Original poster creates a thread and then later realizes it was locked. It can be quite confusing to see a thread you created be locked and you have no idea why.