What is your take on including "memberships" in a CV/resume?

This section can be removed and/or you can discuss this information during the interview only if its applicable to the position in which you are applying for. Additionally, If there are no highlights of accomplishments, there is no reason to bring it up while interviewing.

How far back do you list volunteer/community service work?

SCS says:• Do you feel that your volunteer experience adds to your resume? or Does it fill space. Your profile says that you have twenty years of experience in your industry. Do you want to highlight your career/work experience or volunteer experience?

You should view volunteer experience as complementary to work experience. It can show breadth and depth. It can sometimes supplement bits of missing work experiences. Having said that, I suggest that people consider
1. How the experiences adds to the resume or rounds out your experience
2. The relevance to the responsibilities of position being applied for
3. How you would answer this question, "When did you do this and why is it relevant to this position now?"