You can stitch photos online in this application but I'd rather stitch offline so I can still tweak it in Photoshop. This is a good application, not to mention free. And it works!
There's a button on the panorama page to email it to a friend. Or you could add it to your blog or website or click one of the little links at the bottom of the page to add it to Facebook etc. You need to intall Adobe Air in your computer to take advamtage of these services and register so you can upload your panoramas. The company uses Amazon's web services for it's hosting which is something like $0.18 per gb of upload or download (bandwith)
below is the (embedded) Flash panorama of UST's main building with hotspots to the football field and UST Hospital