I built an app on it a while back http://gflix.appspot.com http://gflix.appspot.com to go with the Netflixprize competition. While the inability to bulk-upload

I built an app on it a while back http://gflix.appspot.com http://gflix.appspot.com to go with the Netflixprize competition. While the inability to bulk-upload data (without workarounds), and the data size limits are rather annoying, it does work well and looks promising, especially given that it is only a few months old. I think the primary advantage is being able to harness Google's architecture for zippy data retrieval, but they then handicap it by putting limits on how much data you can dump. They probably will offer a tiered pricing structure to allow massive dataset uploads.