What language to use on the internet?

What language to use in www? I life and work in The Netherlands. So Dutch would be very likely. But because I worked and lived three years in Malaysia I have a lot of English speaking friends. So what to do? I Twitter in English, my Facebook is in English but my Hyves is in Dutch...

I also like to share new projects with friends in Malaysia and Australia, but most projects I produce now are in Dutch.

I think, no I know, this will be a big problem. So that's why I want to share with you visual designs. A language everybody understands.