I have been experiencing this now quite often . Some of my answers are negatively voted without any further reasons .While I appreciate people down voting the answers if there is no proper info or incorrect info,I would encourage downvoters to atleast leave a comment with reasoning on why a particular answer should be deleted or deserve a negative vote .Is this something moderators can help with and whats the right attitude here ?
A great example for downvote is this answer .The answer produced is from the notes I took on one of the calls I had with Salesforce Lightning Ready Certification jury team and I cant really think of a reason why someone is not happy with the answer .