Simvaition.de

Whist surfing I came across the following site. www.simviation.de Whist it is very basic site (more a search site), it still uses the SimV name. Is that legal, just bad form/manners or is it OK. I have no idea about internet law and and just wondered because if you opened a burger stand and called it "Mac Donalds", you would be coverding law suits up to your eyeballs.
Matt
Matt