DROPBOX was my first cloud storage solution.
Of course now there are many such sites giving us free storage in cloud that we can access it from anywhere, I remember that first 2GB of storage received from DropBox for free meant a lot to me.
Of course, with their promotions, I could extend that to about 8GB - and now I have many other solutions for online storage (Google Drive for $1,99/month for 100GB!), DROPBOX will always be remembered as my first love for online storage - or cloud storage.
And I still have some of my files and folders stored on Dropbox cloud.