Yes, English is widely understood, especially in written form. But what if one could automatically translate this Web site into other languages? Maybe you can! For some time now, Google, Microsoft (and maybe more) third parties have provided a free widget one can embed into a Web page which lets the reader translate the page into the human language of his choice. The only issue in my mind is whether these would be compatible with the constraints of vBulletin. (And even if so, extracting and setting the default target language automatically across multiple pages might be problematic.)
I got to thinking about this indirectly... Supposedly, guys in Latin America are more often fond of models with healthy cabooses than those in the States.
Too bad they don't have Spanish and Portuguese versions of the site, I sighed...
Of course, the ultimate goal of this site is to enhance revenue. So maybe internationalization is only important if many currencies can be supported, too.