Jens,
I will miss seeing your beautiful work here.
I am sure Graeme meant no harm, and posting smaller images does offer some protection.
In my own experience I am aware of only one use of one of my online photos without permission, and that person did at least give me credit. I have also been asked for permission to use one of my images in a film, and I was paid for that, and even paid more the next year to grant additional rights.
The most painful misuse of one of my photos was many years before the Digital era. Someone broke a window in my car to steal a framed print. I would be flattered except that it was wrapped up so they couldn't see what it was.
Eric