I use American Apparel shirts, they have a more fitted feel to them. There is a sizing chart on the website
Are you using the baby rib fitted tees? If not then this statement is just plain wrong, every AA tee I've ever tried is blousy as hell. Why should we buy from you versus the hundreds of other graphic tee brands out there?
Again, this is a brand that is targeted for a specific niche. There are some people who agree with the message, and some people who may not. In another forum, I received over 70 positive responses, and sold 3 shirts within the first 20 minutes of going live (I went live last night). Perhaps those people just happened to agree with my message more than others. This isn't a brand for everyone like Nautica or Polo. This is a niche brand. If you personally think there are more important things in life than achieving your goals, then that's absolutely fine and the brand probably isn't for you.
I have an idea for a custom tee shirt that I think may follow your brand's ideals: I would a normal AA tee shirt, with a print of an ugly (and when I say ugly, i mean really ugly) two or three legged dog, with the slogan "GO FOR IT" across the top. Can you do this for me?