Seen this for a while but never seen anyone explain it. Why do some users have a hand shake tag?

A lot of doom and gloom every day these days it seems. I love music both listening and playing instruments most of my life. Its definitely gotten me through some hard times in my life. Anyways just wanted to take a break from the gloom and ask everyone what their favorite song/band/albumn is. Give me some new stuff to check out! I will start one of my favorite bands of all time is King Crimson led by Robert Fripp. Been around since the 70s, currently listening to "Islands" on vinyl by them.

Hey there folks, I have been a long time dabbler in conspiracy theories and know enough to not trust the powers that be. To be honest I disagree with most of what I see posted here but god damn it I support your right to believe and say whatever you want. I grew up with the internet as the wild west with the beginnings of forums like 4chan and meme culture like YTMND. Its changed so much. So much more tightly controlled and less diversity of thought. To be clear I don't tolerate racism and I see some of that here but I know most of you see through that bullshit. I post this because I want to know you all better as people to bridge the divide between people like myself and those that I disagree with on this forum. I will not insult you nor will I not seriously consider your arguments. Consider this my introduction to this community. Shotout to Axo for making the move here. I know quite a bit about computer science and I think its important we all learn more so we can maintain our own communities free of control of the PTB.