Yes, true. But let's not forget Google's changes do not all come from algorithm updates. For example, the company contracts a couple of companies with thousands of independent contractors who manually review search results. And generally speaking, a lot of the lower quality sites were also riddled with poor writing, as it tends to go hand in hand with other quality issues.

I don't think he's referring to site links but instead Google's penchant for showing a number of pages from the same site. It's a domain diversity issue. Nothing you can really do about it -- it's out of your hands. Can't really think of any negative implications for folks searching for your business.

Nice, man. You rock.

A link from one page will not hurt you. A wide dismemberment of sitewide links like this could hurt you. I seem to remember Google addressing this with WordPress theme footer links recently.