The reason for this being that in some countries there are or might be rules concerning the separation of advertising and other contents (cf. e.g. here). Now, even if our terms of use might state, this version was explictely not to be viewed from the Federal Republic of Germany (which we are not necessarily happy about), just to avoid the hastle of having to cope with its laws. Nevertheless, to be prudent, we have enacted this separation, even although this does not imply that this site would actually be subject to the respective rules.