Depends. Someone new and interesting, maybe. But typically I'll look at the number of views and likes. If they're already getting plenty of traffic, and most of the time by the time I find a channel they are, then they're probably earning plenty from ad revenue. I don't make charitable contributions to people who are already making more money than I am.

There are probably a thousand reasons for donations from financing more videos to charities. It's up to you to decide what is legit and what is worthy. I sell animated cartoons on line & Youtube is where I post some of the free episodes. It's great publicity and it pays off.

I have become a patreon of several Youtubers who produce material relevant to my interests on a regular basis. I don't mind supporting their work, and see it as akin to when I pay a montly fee for STARZ and HBONow so I can watch their content on my cell phone.

Nope.