I was talking with the Google people at the DigitalLife show in NY (MusicMatch was there, I was hoping some MediaCenter folks would have a booth, but no such luck), and it was really impressive. So impressive that I installed it as soon as I got home. I had some concerns about it interfering with other programs, since it's constantly indexing, but it hasn't proven to be an issue. It's really a lot easier to use than, say, the history of IE, as you can search for anything that was on a website you viewed even if you don't remember the name of the site. It also lets you view either the actual site, or a cached copy of the site, so you can use it even with no internet connectivity, such as on a flight. It makes finding old email's a breeze, too, without having to hunt through hundreds just to find what you want. Like others, I wish it would display image thumbnails, and I'd like to be able to turn off its indexing until I want to turn it back on, not just for 15 minutes or so. It's still beta, so if enough people want changes such as these, they might happen. I've no idea how it can be used or integrated with MC, but it is really neat.