It was first used by archaeologists to describe the markings they found on walls in Pompeii. Graffiti appears in many other places as well, notably on the walls of medieval churches. In fact, some are preserved in the churches of Cambridge, England, and rival today's works in their intricacy. Even though the two have never met in person, their Internet links made it possible for them to more than quadruple the size of the gallery from its original 150 pictures, which were posted in September. There's no shortage of on-line activity for the art lover.
Galleries are everywhere, from the most cultured and urbane to the downright disgusting.