Question Regarding 4 Platforms - Trackback, RSS, Referrer, Pingback

I have been testing out GSA for some time now but never used platforms - Trackback, RSS, Referrer, Pingback. Should I use these links in my gsa setup? Please suggest. Kindly help me out someone please

Pingback should not be used unless you do some tricks on your website.
Trackbacks are kind of unethical as you trick here as well
Same for Referrer
RSS is OK in my eyes.