He is being a good citizen in my book. I can't stand sign polution and I applaud anyone with enough courage to destroy signs. On one otherwise beautiful stretch of my commute, there are no fewer than 30 signs visible from one point. If I had a chainsaw and a dozen drinks, I would take them out.
Anything after the H1 were just pussy-footed Blazers in disguise. A local car magazine managed to break the rear axels of a H2 not even 3 hours into it's offroad test. They required Jeeps to pull it out of the trails with chains and winches.
This is all part of Obama's stimulus plan. Reposting those signs will create jobs, those workers will then spend money allowing someone to buy a Hummer to destroy more signs, allowing them to create more sign fixing jobs.
Here is a better explanation: black sheep either 1 or 5 stars something, realizes he/she rates and posts here to fill a need for socializing, either gets in line with the values of the white sheep, or leaves. It's better to be a white sheep most of the time and a black sheep some of the time, rather than the other way around.
Party Pooper checking in: those signs break if you hit them on a moped, and with the damage happening to the paint, I'd assume this is stolen or a drunk driver.