Do you know the Threadless site? Very cool, community driven website. This is how it works--an artist/designer/individual submits/uploads a design to the site. It is voted on. If the shirt gets enough votes, they produce the shirt. If/when the shirt sells out, the community is polled to see if there is interest to reprint the shirt etc. The artist gets some $ and some real idea on what works/doesnt. Plus, its a cool way to see what is new, bleeding edge etc. among this group of viewer voters. Take a look.
Bought the software, Graphite yesterday. Going to need to produce mechanical drawings and this seems to be the ticket for the enfeebled sort. Easy--my pals say. We'll see.