After ongoing troubles with my previous homepage, I decided to switch horses and to build a new homepage, this time using the tools provided by Squarespace. So far, I am quite happy with it, but we'll have to see in a year from now if it does everything I want.
This also means that I have a new domain: danielgutzmann.com. I'll redirect my old domains to this page, once I the domain management is transferred from my old provider. So in case you use rss, update your subscription.