After watching the screencast I got some good insight into what Versionate can do [the features], but I still don't know how it will improve my life [the benefits].

I think you should really stress the benefits and tell people why it is so important to have their files online.

Peace of Mind. You never have to worry about losing important files when your computer crashes.

Instant access to your files from anywhere. If you forget your computer or flash drive at home [no need to worry] your files are online and you can get them when you arrive at work.

I think some simple comments like this could really help.