For those that missed the announcement last week, PhotoSynth is live and after a pretty bumpy start looks like you can at least play around with it now. I’ve managed to load two of my sets of photos from a trip to the High Sierras a couple of years ago. It definitely still has its bumps as I had to cancel and restart the synth several times as it would hang indefinitely. I didn’t get really high "synthy" scores as I wasn’t taking the photos with PhotoSynth in mind at the time. However, the PhotoSynth team has supplied a document of points to keep in mind while shooting photos if you intend to make a PhotoSynth out of them. I can’t wait to try it out when I actually shot the photos for synthing. There are numerous really great examples on the PhotoSynth site, including some shot by the National Geographic Society photographers. I like that you can go full screen (or full browser) as that really helps make the experience a bit more of an immersive experience. Also, the slide show and thumbnails really help as well.
Since my photos didn’t all relate to one another, PhotoSynth sort of creates mini-PhotoSynths inside each. You’ll want to check the thumbnails page to see the various scenes that it stitched together.
Here are links to my first two: