On sites where I have to reveal my real name and can't hide my profile, I am now using a Unicode obfuscator to make my name difficult to find for search engines. Also, I have now started using a username generator so nobody can trace my username from site to site. Because I'm using a password manager, this is rather easy to do.
Unicode obfuscator:
http://obfuscator.uo1.net
Username generator:
http://www.spinxo.com
These are what I used. They're not the only ones.
@stolas For password management, I use KeePassXC (desktop) and KeePass Touch (iPhone). I sync the password file to Dropbox (if your passphrase is good, nobody can decode it anyway). There are other password managers out there, but that's what I use.