First som pros and cons
Pros:
- The services listed here are completely free to use
- Not OS-dependent. You can access these no matter what operating system you are running (Windows, Mac, Linux etc.)
- Safely externally stored. Can't be physically harmed.
Cons:
- Slower then most physical mediums
- If you have bigger needs, you have to pay for it
- High safety needs
The most popular services available:
#1 - 50GB
Adrive.com offers you 50gb of free storage, and I think it is safe to say that this offer is pretty unbeatable. I am using it myself for my photo and document collection and I am very happy with it.
#2 - 5GB
Esnips.com offers 5gb. Also a decent and free offer which can be worth taking a look at. They also have a focus on community and sharing services.
#3 - 2GB
Mozy.com offers 2gb.
The rest are some services offering 1gb:
Box.net
Openomy.com
Dropboks.com
