I have to thank Tim Hathaway of http://hathaway.us for the reminder and this suggestion.  Tim sets up and fixes computers and networks for small business in San Diego CA.

I currently back up my main laptop onto external hard drives but that is monthly and ...well I miss some months.

Tim suggested carbonite.  (www.carbonite.com) and I set up an account with them and love it!

Our business system computors get backed up automatically within our network to a RAID NAS drive but my laptop is often "a cowboy", disconnected from the network and needed a different solution.

Carbonite so far looks great!