Interesting article over at the Washington Post by Michael Benson: It's All Decked Out. Give It Somewhere to Go.

His premise is we already have a habitable platform built in Earth orbit, the International Space Station, why not give it a little boost and make it an interplanetary spacecraft.

Cool idea.

The one issue he does not bring up is the radiation exposure on humans outside of the Van Allen belt.  The Space Station is not built to protect astronauts against the harsh radiation between planets but relies on the strong protection of the Earth's magnetic field.

...but besides that tiny detail, fairly compelling idea.

Reminds me of a cycler as proposed by Buzz Aldrin: Mars cycler, which could sail on the low energy pathways between the planets: Interplanetary Transport Network

I vote Do It!