Agreed, it looks good when people do it on like the fances around buildings that are under construction but when people go around 'tagging' shops and stuff, its gets abit too much and just looks horrible.
used to do it when i was in Christchurch [3million odd people, so really you never get noticed and people keep to themselves] but i moved to a smaller town which there are only 2 writers. so its not really worth doing it here, i always wait for my trips back to Christchurch
Regarding hm0ng's post: I see that as Art and not Eye Pollution Graffiti if you know what i mean. I looks good and when you see like letters tagged on shop shutters and stuff, it just looks messy and horrible.