diberry - 5:53 am on Apr 27, 2013 (gmt 0)
There's a funny little effect that some people report. After they build a business with non-Google traffic sources, they start to see more Google Search traffic, too. Then it's just gravy, not do-or-die.
Well, if you have significant traffic sources other than the Google algo, isn't that a strong indicator that you are not just an SEO or spammer out to game the algo for a quick buck? I've believed for several years that Google can somehow tell how much various sites rely on them, and they are favoring the ones that rely the least. I have no evidence, it just (a) fits a LOT of observations and (b) makes complete logical sense.