I love Threadless, a lot. Threadless (just in case you missed them) is a community site where people can submit designs for t-shirts and vote for them. Winning designs get produced, the winner gets $2500 and everyone else gets to buy fun, funny and creative T-shirts. 
So, Exactly how much do I love Threadless? To the right you can see a
picture of most of the Threadless t-shirts I own. There are about 50 in
that picture (taken in Amsterdam, where I live) and there are more in
Eindhoven (where I also live).
Indeed Threadless has a lot to do with why I came to work for Shapeways. What Threadless is for T-shirts, Shapeways will be for all other stuff. Which is what makes what happened to me the other day quite interesting indeed.
A friend of mine lives in Chang Mei, Thailand and was in Amsterdam to visit his family and friends. As a present he brought me a T-shirt. He talked about markets in Chang Mei where you could get the funniest shirts for next to nothing and gave me one that combined my love of reading for my love of cool t-shirts.
I can be an idiot at times and was so immediately after he gave it: exclaiming in short order that not only did
my girlfriend have the very same shirt but that it was a Threadless shirt, making it abundantly clear to everyone that his gift was pirated. This was a complete surprise to him, and just one more incident of me ruining something by blurting out what I'm thinking. To the right you can see both t-shirts side by side, with the Threadless shirt on the left and the Thailand one on the right. You can see the shirt on Threadless here.
This incident has many far reaching and interesting implications for communities such as Threadless and Shapeways as well as the future of "peer production", mass customization and intellectual property in general and is interesting to me for 9 reasons: