can you make a Box.net app (Box.net is completely different from Dropbox) that will stream portable apps on whatever computer your on. The problem with Dropbox is
1. It only offers 2 GB for free
2. Takes a long time to download all your apps
3. Because it has to download and install the Dropbox app plus all your apps, it leaves a trace on the computer you're using
Some advantages with a Portable Box.net streamer would be
1. Instant access to all your apps without downloading or installing something
2. Allows you to store 5 GB of apps (or more if you pay, I got a 50 GB account)
3. Box has an extremely fast server so it can be as fast as a keydrive if you make the right tools, downloading from the site in my experience was up to 2 MB per second, maybe more if you have a really fast connection.
4. More importantly, I think Box.net pays app developers to put apps on their site and that could support the expansion of the project even further and make more great apps for my keydrive (I mainly am looking for games but many other apps are great too).