you should only subscribe to those who have a buzz score of 1 or even higher reason being is because it can get you more subscribers and second of all it increases your buzz score when you do that subscribing to those who have a buzz score of 0 does not do anything at all unless they increase there buzz score but sometimes that does happen and other time it might not happen because those users are not active and have not sign in in years unfollowing those who have a buzz score of 0 and following those who have a buzz score of 1 or even higher helps you get more subscribers and helps you increase your buzz score remember that is the key to being a successful bitlanders user and is key to making money