I love this. Tucker Nichols created Anonymous Postcard as "a suggestion box for the world..." He basically turns words of praise, suggestions or criticism into vague and largely indecipherable postcards and then mails them toward the appropriate recipient.
And I find them visually fascinating.
LEFT sent to Spaghettios claiming "Thank you for creating the most delicious round ring noodles in the history of the planet." RIGHT North County Transit District, San Diego, CA (link)
Found via @myloveforyou.