@calumam is clearly exceptional so far, I honestly wish to dedicate so much time but then, my lazy as wouldn't let me.
However, following two to three trails might just do the trick. I mean while trail one upvotes posts under the "pob-wotw" tags, trail two upvotes posts under "information wars" and trail three could be general, but this doesn't mean they can't upvote anything outside these said topics, just that the major focus would be on them.
By this, a lager rewards system will be introduced, where the upvotes are widely spread across. It won't be compulsory to follow all three trails as that maybe damage one's Hive power, so maybe two out of three with a "not 100% threshold"
And that brings up a question : how are posts not published through the proofofbrain.io interface treated?
All quality still receive the deserved rewards or there's a reduction?
I honestly don't look at that while voting...
I, personally, do not pay attention to the originating front-end -- if it's good content and either uses the #proofofbrain tag or originates on the proofofbrain.io front-end, I consider it; however, I believe @calumam has publicly stated that he does not vote for any posts that do not originate on the proofofbrain.io front-end. The rationale behind that is the authors who post using the POB front-end receive 80% less (40% of the total rewards instead of 50%), with the balance going to the @pob-fund (which is dedicated to maintaining the front-end). He is honoring their commitment to the tribe by only voting for content originating on the tribe's front-end.
There is no reduction in rewards per se, except that some folks who might have voted for your content (if it had originated on the tribe's front-end) probably won't even look at it.
It's easier for me in all honesty. I do want to reward people taking part directly in the community but I'd be lying if I said it was completely selfless. I try not to spread myself too thin in this environment, it's very easy to get overwhelmed.