Hi pianoplayer51,
I was wondering the same thing myself. I have several unanswered posts. I have once or twice answered my own posts. This is more likely to happen if someone else expresses an interest and would like an answer to my question as well.
My posts are oftentimes unanswered just because I'm weird. I think and/or do things unconventionally. I often get accused of being too analytical. Bernhard would NEVER call me mentally lazy! That is for sure.
I have taken it upon myself to answer these. I search for them. However, I do not always have an answer and so can't answer them.
I feel this is a reciprocal arrangement. The more help I can give to as many users as possible then the more likely I am to receive a response back from someone even when I ask the most stupidest question. I wish more users practiced this.
Also, unanswered OLD posts are likely to get me scolded at for answering them. Ditto for ANSWERED OLD posts that I have something to contribute to. There is a Pianostreet Mafia policing the forums just waiting to pounce for all sorts of trivial transgressions.
There are some chronic whiners and complainers here too. Some heated discussions. Name calling. People with internet cajones who are just rude. So, why would anyone want to answer a post? Certainly not to be abused!
I say, "Hello" and address the user with his or her username. I do, see above. I say, "Thank You". I think I get more answered posts because of my relatively polite manner in spite of being slightly touched in the head. If more people were polite than there would logically be more responses and questions too, I might add.
I am very careful about my wording. Mostly, I try to avoid the second-person personal pronoun "YOU". This one little word lights the fuse for some of the walking time bombs in the world.
So, I personally exercise caution with who I respond to. Forum users have a reputation. Anyone can read your old posts. Some people are just nasty. A few I think have been banned. Some are just ignored.
Well that's all for now and THANK YOU pianoplayer51 for your excellent question!