Irregular Times, who don’t appear to spend all that much time talking about tees normally, have taken a look at print on demand companies and judged them based upon where the stock tees come from, and how ‘ethical’ those suppliers are (American Apparel = good, Gildan = bad, for example) . I don’t know if its the best metric for judging where you set up your virtual shop, but it is certainly something that you should think about when using a POD website.
Irregular Time: Review of Eleven Websites To Design and Sell Your Own T-Shirts, Considering Shirt Source [via that other t-shirt blog]

A lot of the tees have some kind of an animal theme to them, with a comic/cartoon style, and usually with a hand drawn look. There’s a lot of fun designs on show here, even if I don’t completely understand most of them ( maybe that’s the point?), and they’re offerend at a price that might persuade you that you don’t need another tee from Threadless.
The tee’s are printed on Gildan stock, which I personally like because it tends to be a bit heavier than AA (and the summer days are certainly getting shorter), and I’ve got a Gildan tee which is 4/5 years old and hasn’t got out of shape or faded at all.
Costiness=$12 (via Paypal) URL