Yannik: click 'View script source', look at lines 9-12. Got it? You can change it to block anything else ;)

Oh my gawd :P

BTW, nice search tags...

It works only on english wiki. Also, if the paragraph is too long to fit on screen, user has to scroll (if it's supposed to be a presentation, it should scroll automatically). There are no Prev/Exit/Next links on bottom of page.

I think it doesn't work on protected pages (like http://en.wikipedia.org/wiki/Star_Trek ), but i'm not sure as I didn't tried much articles.