You have to be "out there" as an indie author, easy to find and easy to access. You've got to be on social media and build up your author page, join in on forums and respond to fans who have something to say to you. But there will be lots of times when you don't like what they say. Not everyone's going to be a fan. When those non-fans approach you, and they will, you have to learn how to master a necessary skill: grin and bear it.
Let's Get Critical
The entire world is full of critics, and the Internet allows everyone to get critical about anything that they see. Many, many people choose to exercise this right. Some of them are going to do it with you. Can you handle that?
The Internet allows for a type of communication never before seen. It allows for spacial barriers to fall away, so that two people can have real time conversations even from opposite sides of the globe. It allows for exploration that was never possible before. And it allows for people to act a lot like jerks.