I certainly don't think editing hurts. Besides, I'm a firm believer that if you are writing well, and well-thought out pieces, any money or traffic that generates money will come as a natural part of that process. If we just spit out a bunch of garbage, we may still get some folks in, but the work will be a lot more.
An analogy from a factory workers perspective; I can perform my job well by honing my skills on the job, and by setting up my machine properly. I can have a full and extensive knowledge of my machine, keep a watchful eye, and perhaps even avoid some potentially bad situations. I will not have to work hard, and therefore the value of every dollar I earn will be greater.
Or I could just show up to work and run my tail off because product doesn't want to go in the right places, I'd rather chit-chat then watch...
I'll walk out of the plant sweaty and though the money may be the same, I'll have worked a lot harder for it.
Write it and they will come. Write it well and they'll come back. The value of each new reader you reach has greater value.
Long and short; I'd rather work for 1 new reader to come back 10 times than work for 10 readers to come in only once.