The assessment, whether or not this is a commercial website by German law exceeds my juristical capabilities by far. To avoid violating any rules/regulations/decisions/laws, I try to follow all rules for commercial websites, e.g. I publish my address below. If you want to contact me however, please do that first via email: contact@port5.de.
Thomas Heckmann
Habichtstr. 38
D-90766 Fürth
Germany
Tel.: +49 941 5992 86664 (Voice-Mail)