I have a feeling that most threads on a message boards have self-indulgence at their core. However, I know what you mean about the Arts Corner …. there is a bit in Private Eye which mocks people who take themselves too seriously. I know I sometimes get a bit carried away posting things that I love. But, I resemble the suggestion any of it is twaddle tut !!!
I love the journey of discovery you can sometimes find yourself on, even on a message board. If I ever stop wanting to know more, someone shoot me.