Should dropbox worry? Sure, not worrying would simply be stupid. Should they be mortally afraid? No, probably not. Dropbox has a lot going for them, and one of

Should dropbox worry? Sure, not worrying would simply be stupid. Should they be mortally afraid? No, probably not. Dropbox has a lot going for them, and one of the biggest things they've got going for them is that they are not google. They can specialize, they can do one thing and do it well and they just had a huge company validate their market for them. Look at omniture vs analytics of how that can play out.