I was interested in signing up to Mega.nz to store lots of personal medical information, personal identification documents and business related files
I would like to retain some anonymity as this is the reason i dont want to consider Dropbox as they scan your files and you dont know how secure the Cloud storage is
Cloud storage of non encrypted files and anonymity can not go hand in hand. You either encrypt the files very well before uploading them or, preferably, you do not store sensitive information on a server owned by a stranger. Leaks, hacks and every thing negative happened in the past, why put yourself under the risk of becoming only another additional victim to such event?
Not to mention you can not be anonymous if personal information sits in their cloud. Sure, I can store a file named 'tonynewham', it does not necessarily mean I am 'tonynewham', but one may immediately assume that I am!