There are several definitions, including the most restrictive, which is to find poetry without removing any text. A good example might be William Shatner reading Sarah Palin's tweets.
I prefer finding poems by deleting text. I have a blog devoted to a project where I have people send back poetry found in the pages of Treasures of Morrow, a young adult novel by H. M. Hoover.
Here are some found poems I have been sending out occasionally with my mail art. They all come from a desktop page-a-day calendar.
Have you created any found poems before?
F is also for Fauxhio is the fictional place where the artistamps (also known as faux postage or cinderella stamps) I print are issued.
I use the first two stamps quite a bit, usually on envelopes, occasionally on mail art itself. The second two are ones I ordered that are impossible (small brown) or finicky (purple) to use.
Occasionally, I'll create a special first day of issue postmark. I adapted an old scifi TV channel logo. And sorry about the cut off scan - back from my days of ineptitude with the scanner.
Where would you want to post your own stamps from? A real place? Somewhere fictional?