>>If you're shopping for something, the paid and Google shopping results are often more relevant than the organic results since a lot of them incorporate real time price feeds or promotion codes.<<
In many cases such feed prices are inaccurate. I have used Google shopping many times looking for the advertised price only to find it's "out of stock" or the promotion had ended by the time you click the link. People do the same crap to the other shopping search engines too.
>Advertisers do not bid on keywords that deliver no economic value so it's in their best interest to only show up when they are the most relevant to your query.<
In some case the economic value isn't in the best interest of users. A lot of spam targets installing malware, invading privacy, or similar. Further, there are ads which advise you to "buy x thousand links for cheap" or similar, which at their core suggest you violate Google's search guidelines. And Google had like 50,000 advertisers pushing counterfeit goods at one point (according to Google) and that issue got cleaned up only after Google was hit with a sting operation where they were caught selling ads for steroids for a person posing as a Mexican drug lord. Apparently the drug lord had a high quality score at the time. ;)
In many cases such feed prices are inaccurate. I have used Google shopping many times looking for the advertised price only to find it's "out of stock" or the promotion had ended by the time you click the link. People do the same crap to the other shopping search engines too.
>Advertisers do not bid on keywords that deliver no economic value so it's in their best interest to only show up when they are the most relevant to your query.<
In some case the economic value isn't in the best interest of users. A lot of spam targets installing malware, invading privacy, or similar. Further, there are ads which advise you to "buy x thousand links for cheap" or similar, which at their core suggest you violate Google's search guidelines. And Google had like 50,000 advertisers pushing counterfeit goods at one point (according to Google) and that issue got cleaned up only after Google was hit with a sting operation where they were caught selling ads for steroids for a person posing as a Mexican drug lord. Apparently the drug lord had a high quality score at the time. ;)