Proofofbrain is a generic tribe I have talked about a couple of times in the past. I hate to repeat myself, so the tldr is that it is a tribe accepting all kinds of contents with a maximum circulation of 21 million tokens.
Feel free to visit @proofofbrainio and https://www.proofofbrain.io if you want to learn more about the project or just slap the "proofofbrain" tag in all your posts. Since they accept all kinds of content, there's no way to go wrong with it!
I was lucky enough to discover the tribe almost the very first day it came out so for a month or so I was earning some nice rewards and I powered up all of them.
However, the past few days the tribe seems to be picking up in price and honestly I don't think it will hold, at least not for the short term since they haven't been any special news or whatever
This is why I'm following now a different strategy. I stake about half of my earnings and sell the rest on hive engine.
Here's a screenshot of today's profits:
That's about $5 for simply slapping a tag , not bad, right?
So yeah, give the tribe a try, it's literally free money!