Protecting oneself from surveillance capitalism
As an author I find occasional use of Facebook and Twitter to be useful for “broadcasting” notifications of my new books, open source projects, etc. I also find gmail to be useful for some types of email.
Still, I do like to take a few easy steps to push back a little against the free use of my web behavioral data to profit corporations who I don’t do business with (and those I do):
Use ProtonMail as my primary email
Use Firefox on my Linux and macOS laptops with individual containers for Google, FaceBook, etc.
On iOS devices, favor browsing with private tabs.
Use a VPN when I am traveling and when I need to use public WiFi
Limit use of my gmail address to a backup email and as a junk email address.
For online purchases from Amazon, etc. use a secure email service that does not use the contents of your email to market to you and as data to sell to 3rd parties.
Frequently delete all cookies from web browsers that you use.
Use private browsing windows for routine use of the web
Prefer to access the web on an iOS or Chromebook - probably more secure than a laptop or PC.
Logout from web apps like Facebook, LinkedIn, Amazon, Google, Twitter, etc. to avoid active sessions.
This takes some time, but on mobile devices, Apple/Windows laptops, etc. turn off tracking on as many apps as possible.