OffTopic but very nice offer: With this Android App you can upgrade an existing 5GB Free Box.com Account to a whopping 50GB! Works lika a charm. After that you're able to invite more people who can redeem their 50GB Box. They only have to have the same EMail provider. So that works for colleagues at work or if you're on @yahoo.com @hotmail.com but unfortunately not @gmail.com.
With the plethora of Apps that you can use right from your account, or even more clients which are opensourced on github, there are a tons of possibilities to integrate your cloud stored files.
Only Disadvantage is a 10GB Upload Limit per Day and 200MB FileSize Limit.
Note: You need to get that apk from the mediafire link.