Source: Dear Data
There is something lovely about displaying data in well thought out, detailed ways. I love that feeling of potential, that if we just think of one more way, one more infographic, then perhaps people will change the way they behave. It is a semi magical process by which numbers in columns on a spreadsheet turn into meaningful data.
Add to this my love of handwriting postcards, and this just seems like an amazing idea!
Another great, more polished example is feltron, a blog by a prominent ex-Facebook design team member Nicholas Felton.