You don’t NEED to follow every profile you come across - you only need to follow the people who you find interesting and valuable to your everyday life. Follow them if you would talk to them in real life.
In reality, the number of followers you have should simply reflect the quality of what you give. If you’re following 1,000 people, and have somehow got 800 of those people to follow you back, it doesn’t really mean that much. But if 800 people have come across you on their own and started following you, while you’re only following the 80 people you care about - that says something about your value. It says that people follow you because you’re valuable, not because you’ve started following them first.
Reading all in: http://twurl.nl/nwkka0