This is the most complete, correct and helpful answer I've seen so far - agreed on all points. I just want to add that the Bundesanzeiger stuff kinda correlate

This is the most complete, correct and helpful answer I've seen so far - agreed on all points. I just want to add that the Bundesanzeiger stuff kinda correlates to the Impressumspflicht for websites, of which I cam not a fan at all for personal sites, but it's good to know that a company (which takes your money) has to have an official address and you can cross-reference if it's a real company.