Boing Boing: Skytyping
… The Skytyping process utilizes five airplanes that fly abreast, 250-feet apart and "type" up to 30 character messages in a dot-matrix-like pattern. When Skytyping, the airplanes create messages in the sky that are 5 miles long, as tall as the Empire State Building and can be seen for 15 miles in any direction or nearly 400 square miles.
God Bless America!
Did you ever stop to think what this ridiculous species of ours might achieve if it expended one tenth of the ingenuity it expends on advertising on—oh, I don't know—seeking a cure for cancer, ending famine, fighting climate change, or bringing about world peace?
We've got what it takes, you know.