ZBrush wrote Really detailed but essentially your telling people to copy other graff artists work in order to develop there own hand styles and pieces, which in the Graffiti world is second to stupid.

If you want to just mess around and not make a name for yourself by all means copy.
But If you want to become a graffiti artist the only way is through practice and development from your own handwriting.

I totally agree. However this is just for people who are trying to get started and need a good base to start on. Once you get good enough you start adding your own style and what not.