Also, to clarify something else... ad CTR is usually based more on the advertiser themselves than anyone else. If two advertisers create their ads, they will have different CTR's, even when on the same content. There have been ads that run a 0.00% CTR because they flat out suck, and others than convert 10%+. When you bring revenue into this as part of determining how much each writer's "value" is, you're not only basing it on THEIR work, but also the advertisers', something the writer has absolutely no control over.
Man, this is going to be a real dilemma to solve as writers (and other types of contributors) will keep growing at a most likely exponential rate. Round 22 had roughly 122 shares, round 23 had 501 shares and now we at around 1,000.
That's exponential so the question is will there be a slowdown now cause the value has gotten so low or can we expect roughly 2,000 shares for round 25?