Some people suggested having different accounts for different topics you post about -- music, tech, family, etc. I think this is better handled with addressable lists (send this post to my close friends and family, this one to my electric car friends, this one to my Linux friends, ...). More generally, hashtags can manage this, too. So, I don't think you need different accounts for different topics, unless you need to be able to disavow any connection to the topic (e.g. political or sexual).