Well, I already know jinx.com and thinkgeek.com - I'm specially fond of the {link: Social Engineering T-shirt|url=http://www.jinx.com/scripts/details.asp?productID=122} - although I did not know the third link you gave, hacketstrickers.com, thanks!\\
I'll skip your suggestion of the Will Hack For Sex T-shirt, no need to offer any kind of services to have sex ~~laugh~~

You know, the only problem I see regarding all these shops - including splitreason - is the shipping cost. Since I live in Portugal and all these shops are US or Canada Based the shippings costs are a bit high, at least when you are buying a single T-shirt and nothing else.\\ 
Next time I'll add more things to the package so it justifies the shipping price! heh