Although Photostream is intended to be a tool to illustrate the use of various Android features, it also looks like a potentially useful application for when the phones start shipping later this year. The open-source program lets people browse a particular user's photos, in groups or individually, and create separate shortcuts to different Flickr accounts, according to a description at the Android developers blog.
Google is trying to attract developers to Android so the project has a rich set of applications. Part of the promise of the effort is to build an "open" foundation, not unlike personal computers, where people can install new software.
Users will be able to find new applications at the Android Market, though that online service likely will launch only with free applications, so developers hoping to profit from the site will probably have to wait.
Google is also moving technology from its Chrome browser to Android.