CloudOn, a free iPad app that offered Microsoft Office functionality with Dropbox support, appeared briefly in the App Store yesterday before going up in a puff of smoke a short time later.
CloudOn has responded saying their app has "sold out", but we think this may have had something to do with server overload.
Thanks for your support of CloudOn! We're currently sold out. We look forward to the feedback we will receive as we continue to support the many users that have registered in this first phase.