Reader Daniel Gilbert seeks to make better use of Dropbox. He writes: Because I travel fairly often, I’m trying to make my Mac’s important documents available to me regardless of where I am. And I ...

As any Dropbox user knows, it’s pretty easy to share a cloud-stored file with someone; just click the share icon to get a link you can distribute as needed. Ah, but what about the other way around?

Did you know that when you make changes to a file you have in your Dropbox, the cloud service actually remembers those changes? In fact, Dropbox retains unlimited versions of your files for 30 days.