I just saw someone post up a link to the discounted Dropbox subscription when I realised that Jottacloud is already much better value without any kind of sale. I am a long time user of Dropbox but i've recently moved over to Jottacloud because of the more generous deals that they have. All features are effectively the same as Dropbox including mobile apps. Also you get 5GB free straight up and can have up to 100Gb free through signing up additional people which is huge. Another little piece of mind bonus is that Jottacloud is Norwegian so the NSA will be slightly less privy to your files.
Enjoy
I am always sceptical about "unlimited" - there is just not such thing…
I would not worry about anyone (including NSA) looking into my files I put in a cloud. I would be stupid to put anything there what I am not comfortable with to be seen by anybody - or being encrypted enough. What I worry about is how long the company has been operating, what is behind it and sustainable the business model is.
Have seen many of those companies disappear in last few years.
But yes, otherwise a good deal for assuming a big storage.