He's saying make the thread bar title a quasi-searchbar so that as you made your thread, it would display if there were already results for it.
However dude a lot of thread titles are completely unrelated to what's inside, or phrased cleverly, or use different acronyms or synonyms or wordings or symbols or jargon...yeah, a lot can be different. I bet it would take a ton of computing power to make a thread-title-searchbar look through every thread with every keyword ever.
I say its unlikely that this will ever come to fruition - good thought, but not applicable.
OP: "If you suddenly skied off a huge fuckin cliff and you only had time to throw one last trick before you died, what would it be?"
Malcolm: "id probably just flail my self to death"
"If the overall quality of your film depends on what you shot it on, you aren't ready to make a film." - Barry Green