That'll do, rover. That'll do.

Seven years and 4.8 miles later, NASA has decided to abandon Spirit after being unable to communicate with the rover for over a year. This XKCD comic seems poignantly apropos today (even if it is a bit anthropomorphic):

Thanks for Fark (of all places), I've discovered that all 128,222 images taken by Spirit are available online through the mission's webpage.