With cloud storage continuing to make progress as broadband continues to make inroads to more people and speeds increase, I hope features and transparency in using them grows. I have and use to various degrees iCloud, SkyDrive, DropBox, and Google Drive (used Insync for a while). My favorite is still DropBox and the space limitations are not an issue for most people. Speeds of Cloud storage will never be the same as LAN or WLAN speeds for large file storage, so frequent access to large files in the cloud is not a realistic possibility yet (ever?). While an argument could be made for backup, well I think CrashPlan, Mozy or Carbonite (as well as others) have that market covered.
While I like the Arstechnica brief pros and cons (http://arstechnica.com/gadgets/news/2012/04/cloud-storage-a-pricing-and-feature-guide-for-consumers.ars), I would love to see more in depth pros and cons from long term usage. iCloud for instance while great for iOS backup for our families 2 iPhones and 1 iPad, there is no transparent way to mount the iCloud volume for direct or cached data storage. On the other hand, the Shared folder on the DropBox volume is nice for my wife and I to share working files across our two or three computers for work. Awesome. SkyDrive has a hook in MS Office which I have tested and works nicely, but it is limited in device support. GoogleDrive is really new, so I am still working through using it.
I suspect this will continue to evolve over time.
Use Dropbox? This tool is AWESOME! Drop files into your Dropbox from any user with an Internet connection. Password protection means that only files you want people to upload make it into your box. Super cool! (can you tell I'm excited?)
I use these symbolic links to automatically sync various web services together. For example, with these links in place, I can edit a file in my Dropbox, and then have the updated file automatically uploaded to Box, Skydrive, and Google Drive. I can also use the online editing tools for anything in my skydrive... and you get the usefulness of this.
A desktop wiki like tool for keeping track of notes, phone numbers, and even has built in tools to use as your GTD system. It is cross platform running on Linux and Windows. With Dropbox you can keep your notes synced between all of your computers. You can even attach documents, files, and insert pictures too to keep all of your information in one place. Each note page is saved in plain text making it possible to edit the files with a normal text editor if you do not have Zim Wiki installed on a computer but have access to the files.
Get more cloud storage space. You know you want it. This is like Dropbox in how you upload and store and/or share docs and images. It is also the same in how you as a user get more space. Invite others! The ability to share large files that email can't handle is comparable to DB, but I think the sharing is set up in a more intuitive way. Faculties could use for sharing on specific projects -especially if it is a non google school.
Keepass2 with the KeeFox Firefox Add-on and Dropbox to make it available to all my computers and devices is wonderful. On my iOS devices I use MiniKeePass to have my passwords with me everywhere. It is all free too.