I'm pretty new to steemit and have noticed this type of article around already. I think that it is nice to just check out to see if any of the “gems” have any subjective value or “shine” if you will. I personally would not upvote the hidden gem author unless they pointed me toward several articles I am interested in. This being said I think only a really benevolent gem miner would pass on their value to the original authors. You said these people are “contributing greatly” and I do think their work of scouring through steemit to present the gems should be rewarded.