Public speculation on who might be Satoshi. Hal Finney's family has been negatively affected by such speculation; so have other ppl identified who are still alive. Satoshi made a very clear choice to be and to remain anonymous. I personally think that choice was a key part of Bitcoin's success and that his anonymity should be (publicly) respected. Of course, we can't stop speculation on such a topic and certain media organisations have relished diving into the mystery. But I think such speculation should be shunned within the Bitcoin community.