Worked like a charm for me. Some of our valued users are fast at creating threads that have to feature the first post with information from the administration of the forum. This add-on helps with such situations greatly. Don't forget to set permission for Change Post Date to Yes for your admin/moderator user groups.
This is a very handy feature that works as described. I set up my website well in advance of the publication dates for some upcoming novels. I wanted to set up the forums and several threads ahead of time. This feature lets me keep the dates 'fresh' so it won't look outdated when I actually do publish and hopefully attract visitors.