Via Neatorama, you can enter a message into this website and watch it appear on a big LCD display in an office in Spain. Here’s what I wrote (click for larger version):
There’s an industrial principle that says if you make minor changes to the workplace, you’ll get a temporary increase in productivity from your workers. Maybe that’s what’s going on here.
DarrenBarefoot.com 
hehe
This could be really bad though for the 10 minutes I watched, all the messages were surprisingly tame!
It would be fairly simple for someone to combine the output of an office web cam with an overlay of the text entered. As with other pages that do the same, there’s the possibility (or likelihood) that this is the case here as well.
From what I figured out the program filters out the worst insults. If your comment has more than two words, it fractures it into two so you don’t get the “real meal deal”. For example: The supreme Spanish (as in Spain) insult is Me cago en Dios ( I shit on God). I posted this and it appeared:
Me cago en
Dios
That’s why it’s tame.
Alexwh