It really is great. When I was still on Reddit, I made regular use of the "Tip of My Tongue" sub to track down obscure stuff I half-remembered from years ago. It mostly worked, but there were a few stubborn cases that went unsolved, even after pouring every ounce of my Google Fu into the endeavor. I recently took the text of these unsolved posts and submitted them to Deep Research -- and within an hour, it had cracked four of them, and put me on track to find a fifth myself. Even if the reasoning part isn't entirely up to par, there's still something really powerful about being able to rapidly digest dozens of search results and pull out relevant information based on a loose description. And now I can have that kind of search power on demand in just a few minutes, without having to deal with Reddit's spambots and post filters and hordes of users who don't read the question or follow the sub's basic rules.