Man, I don't even get quoted on my own website? Well, thanks to EUOL anyway for suggesting it multiple times, even though nobody took him up on it.
As far as T-shirts go, I say hurrah. As far as profits go, I say...hurrah if we can do it, but nobody get your hopes up. Tage is probably very correct when he says that the primary audience for these T-shirts are the people posting to this thread; I just don't foresee anyone else buying them.
Someday I would like this site to make money, if only because I want to quit my real job. I need to really study the idea first, however, and make sure we know what we're doing. That said, if people are willing to pay 15 or even 12 bucks for a T-shirt, we could certainly do something cool with the money--we could finance a few months of a MMOG account for a reviewer, or pay for an event/con kind of thing, or whatever.
I need a new poll anyway, so howzabout I ask people what price they would pay for a ten dollar shirt with forum quotes?