For instance I can count 19 ad links to 10 organic search results the vast majority of the time.
Also the shopping result listings are always paid for but google does not label sufficiently that these are ads and even in the small disclaimer google uses ambiguous language to trick searchers into thinking that these ads are not all ads.
.... erm no google is compensated for them all!"Google maybe compensated by some of these listings"
Also the ads take up a huge side bar column which by the way if you are using a desktop is in the center of the screen, and a huge block at the top too.... whilst the real results are just displayed to the side...
All in all it is pretty hard to distinguish ads from not ads.
All that being said adblocker plus does a great job... it would be great if adblocker plus could look into the whole more ads than search results on google issue.