Just a footnote regarding lo-fi photos ... I recently did a portrait shoot with my RB67, and decided to take a test Polaroid with some (to me) precious type 669 - just to see what I thought of the lighting and setting we had chosen - before shooting with regular black-and-white film. My clients, neither of whom are particularly interested in photography, found the Polaroid of their young daughter very charming and nostalgic (and of course they got to keep it). My point is there really is some general interest in photographic processes that aren't necessarily "high-fidelity" or "perfect" and that it's not just the lomography fans who feel this way. I hope the Impossible Project proves very successful!
Now I need to find an SX-70.