Regardless of what the subjects matter is being asked, if you feel that you would like to help out, by all means you can try to answer the query. You could also choose to ignore it if you think they should have place some effort in searching for the answer themselves first rather then posting the question in the forum. If no one answers their question, they will most likely go look for it elsewhere and maybe it will force them to search harder.
But there will be times when there will be those who truly do not know how to search for information other then asking aloud. I have encountered these types before – they really do not know how to search and these type of people exist. Anyone will encounter times where they are new to something and don’t know where to get help other then asking someone.
Anyway, to help or not to help, its 100% up to you. There is no rule in any forum or forum like site that forces anyone to answer questions regardless of the type of questions asked. It’s all virtual here. You have the power to choose to “ignore” unless of course you have some kind of mental block that is prohibiting you from doing so.