...here the obligatory disclaimer:
The Hamburg district court stated in its judgement from december 5th 1998 that when placing a link one might be jointly responsible for the content of the linked web page. This circumstance can only be avoided if one explicitely keeps one's distance from these contents. For all links on this web site I therefore explicitely state: "I do not have any influence on the designe and the content of the linked web sites and I therefore keep my distance from those contents"