I just maintain an anonymous one and never comment. Lets me follow whatever topics I care about and no worries about anything coming back to bite me. I make sure to try and include people I disagree with as well to a certain extent as its a good way to see other points of view and also to reinforce why I disagree with them in the first place. Lets me know I am not in an echo chamber and at least 51% of my opinions are probably my own... maybe.