For my personal stuff I just use Google Drive. I don't think that Google is going to ever abandon it since its tied into all their products as the storage solution.
For my servers, I've been wanting _something_ that I can use Amazon S3 with. Just did a search and found out about CloudBerry (http://www.cloudberrylab.com/). This is perfect since I also have a NAS and scripts that backup the server nightly. With this I could essentially just install and repoint the existing script to the new drive. Also, S3 has built in versioning which is really nice.