It would be nice if all situations where you would want to utilize Microsoft Vine occured when you are sitting in front of a computer where you have the client installed, but that won't always be the case. I hope that a future Microsoft Vine Client could be designed to run entirely on a USB thumb Drive, that way you could carry it with you at all times and if necessary plug the thumb drive into someone else's computer and be up and running in a matter of seconds. It goes without saying that the more operating systems you supported via this approach the better, as you never know what kind of computer you may have available to use at a moments notice.