EditorialGuy - 4:18 pm on Jul 30, 2013 (gmt 0)
The average user donīt see the shifts in serps as long amazon/ebay is first. But the avergae user donīt see that there is much more ads, either. They donīt know that they are clicking on ads, they donīt know that they been tracked by google.
I think you meant to type "tricked," but in any case, there are two different issues here:
1) How ads are displayed on Google's SERPs.
2) The organic results.
If Google continues to add more ads at the top of the SERPs (or continues adding so much Universal Search clutter that the traditional "10 blue links" get pushed way below the fold), the effect of changes in the organic results--whether positive or negative--will be reduced.
In other words, changes in Google's UI could have as much impact as changes in the organic rankings (at least for publishers who tend to rank in the top 10).