How are you getting on with your myspace friends these days? Because if Instagram, Facebook, or any of those things go away, you have lost all of your contacts. You won't be able to get in front of the people that are giving you work all the time or your audience, who you want them to play your music.
My top tip for you today is to start your own email list. You have to have your own email list. It's still the number one way of contacting people. When any of these networks decide they don't want you on their system anymore.
But you can also use it as part of the system to build up a big network of people. And that way, you can stay in contact with the people that actually care about what you're doing. And this is totally free. If you're not doing it, you should be doing it right now.