One thing has popped up recently: Dropbox relies on the urls to folders in 'boxes' that are shared to remain secret, nothing stops google from indexing the contents once the location is known, there is no 'robots.txt' that instructs google not to peek there.
This could lead to a lot of people being highly surprised that the contents of their secret stash are suddenly open to the portion of the population that uses google.
The problem is that it's not just the users that nominally own the data that control this, basically everybody that you share that url with can 'leak' it to google, either by using a toolbar or by posting it on some webpage. After that it's fair game.
To see this for yourself:
http://www.google.com/search?hl=en&safe=off&q=a+site...
According to dropbox support this is by design, but I can still see how some people might be very surprised by this.
edited for clarity, thanks thomaswmeyer.
I am glad this was clarified.
'public folder': implies one has to do extra work to make those files public. Default is not public.
I was wondering which one describes Dropbox situation correctly.
we had issues getting the press excited at launch. We built a fantastic Windows client. 3 years ago, everyone was running Windows. We were so excited to show the press, yet they all had Macs. Walt Mossberg wouldn't write about our product because it was PC only. Months after we hired our PR agency, we found out that they had never even used our product... because they too only had Macs. It's pretty hard to pitch a service when you haven't used it.*
I'm surprised: I could see a fantastic Windows client being okay before 2004 or so (this might be because I got a PowerBook in 2004, but roll with it). By three years ago the return of the Mac was obvious to pretty much everybody, especially people who care about computing. The people who're running tech blogs, writing forum posts, and so on are disproportionately Mac users.
(http://www.quora.com/Dropbox/Why-is-Dropbox-more-popular-tha...)
B2B needs lots of features, a great sales team, and can be Windows only.
B2C needs a great simple UI (which may one day have lots of power features tucked away, hopefullly after A/B testing), lots of press, and multi-platform is a big plus.