Background search reduces reposts in Google Groups

One issue that many online forums face (other than link spamming, which is another story in itself) is to reduce the number of duplicate questions (queries, support issues, whatever) posted on them.
This is what prompts many forum administrators to put a sticky message right at the top that says, in effect: Please search before you post. Unfortunately, this is one nettiquette that is honoured more in the breach, as most people don't bother to search the forums (either succumbing to the "MY problem is different" syndrome or simple laziness.)
The new version of Google Groups has a nice feature where Google actually searches in the background for the words/phrases you type in the Subject field of a new post and show the threads that match in a preview window. I found it by accident, when I wanted help on a problem I was having with Blogger and (guess!) set about starting a new thread. By the time I finished the subject line, the answer for my query was right there at the top [See screenshot].

Way cool!

I am afraid I had to crop the image rather drastically to make it fit into my template. I am still trying to cajole someone with decent design skills to build me a template.