Everyone's got at least one horror data loss story to tell. Computer errors and hard drive crashes can hit at any time -- usually when it's going to be the most inconvenient -- so it's worthwhile to look into an online backup service to keep all your precious memories and valuable information safe.

If you're backing up your data but you're not saving it offsite, you're putting it at risk. If something happens to your home or equipment, all that data could be lost. That's where online backup services that send your data to the cloud for backup are so invaluable. This week we're going to look at five of the best, based on your nominations.

Windows/Mac/Android: Carbonite Currents keeps track of the documents you open and work with, and gives you access to all of them on any device. If you work on a file and forget to put it in your Dropbox folder or email it to yourself, Currents shows it to you. It's a handy service, and it's completely free.

As one of our Lifehacker readers' favorite backup tool, we already knew that Carbonite offers inexpensive off-site backup. What we didn't know is that you can also now access your Carbonite backups from the comfort of your browser.

The popular Windows backup tool Carbonite, released a Mac version this week—so if you've been wanting to get Carbonite's excellent backup service on OS X, you're in luck. Not a fan of Carbonite? Check out some other excellent alternatives. If you want a more detailed look at how it compares to the other popular backup utility, Mozy, check out our Mozy vs. Carbonite faceoff.