Has anyone bought any t-shirts from Fluther?

Do they shrink much, did you have to buy larger or smaller to get the right fit? I was thinking of getting a few of those shirts, but wasn’t sure what size to get. I normally can wear a large as long as it shrinks just a tad through the washing machine. Other wise the large looks a bit too big, and sometimes a Medium fits well, but not if it does shrink.