I was just posting a topic on some forum and found a great feature. When you start typing the topic title, the board automatically starts searching topic titles of existing topics with similar content and lists them below (latest at the top) as suggestions.

This is a great way to prevent duplicate topics for the same discussions and I believe would decrease the work of moderators while at the same time provide a very cool and useful feature for users.

It's so simple yet so useful, I just went: Wow, I wish IPS had this.

Hi Tom. 

It has, as a 3rd-party resource: