Online Storages, what do you put there?

Lots of online storage companies offering more and more GBs of free space, see TechCrunch reports.

My question is what do you put there? Unless it is pictures, videos or stuff you want lots of people to look at, why do you want to put your files on a server that everyone has access to?

I would not put any of my personal or business data in any place that I do not have physical control and cannot control who may connect to it. I would like to be able to unplug the cable when I need to.

Plus, it takes a long time to upload a few gigs of data, and once uploaded, it is not really available everywhere, at least not yet, e.g., when you are in a plane or on the road in most places.

So I see the free online storages mainly limited to audio, photo and video sharing, and to spammers who want their contents everywhere. Am I missing anything?