Earlier quoted context omitted.
I don't know that they have a submarket cornered per se, but my university seems to be using them exclusively for the online class system (log in / download lecture files, etc). On my own I've been using them for about 5 years, give or take. I use it over Dropbox a majority of the time. I personally like Box. I think it works well enough and it has a desktop syncing client for regular customers now. Used to be exclus…
What does Box do better than its competitors? Their small file size limit and lack of a Linux client have prevented me from using their service.
Personally the only thing I've really had a problem with using Box is the small file size limit as well. But everything else has been smooth since starting to use it.