I’m a big fan of Trello. I’ve used it on various projects before and it really is a fantastic tool. I’ve tried it off and on for medium to mixed success but what I find really interesting about your proposal here are how you use the comments section on your cards and the way you sort them by earnings.
I suspect it would be different for someone with a lot of articles out there already. That’s be challenging to go through everything to record its lifetime earnings. But on an ongoing basis it could be really interesting.
I especially love how easy your process would make it to see the trends and help you to figure out what to write next based on that. Very awesome stuff!