This thread is already a year old, i doubt there is anything new.

Is there any other way to mark posts as unread?

Not that I know of.

Stumbled across this hoping there was a way to mark threads as unread. I'm a forum admin, often want to go in to a thread to check it, if it's a quicky I'll answer, but if it's a more detailed response that is required I'd like to be able to mark it as unread so I can address it later in more detail.

Bookmark.