I let Medium add the tip thing because hey, why not? I'm not rolling in it, but I have recieved about $75 in tips from readers that were particularly moved by something I wrote. It's far and few between and that's fine, I never expected much of anything and truth be told, it still feels a bit wierd to me when I get a tip.
I've not tipped a fellow writer yet. I'm not opposed to it, I'm just not in a position to be able to at the moment. But if something in future moves me and my ship has come in, I'll be happy to pay it forward. 😊