Who works on Adsense? Not me. I just throw the ads up and see where they fall. If I relied on Adsense for my main income I would be one sorry sausage!
For those who's earnings would increase...what systems do you have in place that would allow that to happen?
I guess anyonme of those could happen. Some will say they stopped working on their sites but the earnings keep going up, while others may say their earnings started falling gradually, etc.
I don't know what would happen if I stopped working on my site. Generally my visitor numbers have increased on my website, from year to year. So I guess I could hope that trend continues even if I stopped working on the website. I'm not taking that gamble though. I think eventually the income would taper down. But it would take a while as the effect of recent additions to the website and promotional activities hasn't fully set in yet.
Well no one works on adsense all we work on our websites if it's an allredy establish site i think it will do good for a period if it's a new / not very popular site things wouldn't be great ...
I'm one of those going for "earnings would slowly taper off", but that's just a guess. I have sites that I have sat on for years without doing much to, and they surprise me by maintaining their popularity through no work on my part. The same could be true for anything to do with Adsense. There are so many factors which we have limited control over: a site could take a tumble in the SERPS, competitors could move in, it could get Dugg or become really popular with the social bookmarking crowd. People could stop buying widgets, and so on.
Remmeber, a great site will probably get a boost even if you stop working on it because it could get a lot of natural linking thus boosting its search rankings.