I still don't know of any articles about the differences because they are not comparable. (Websites and ebooks).
You said most people go to a, b, c and d sites.
How do you know this? Do you know most people.
And again I said if the information is constantly changing I wouldn't buy that book if the updated information is always available on the web. Example a book about gold prices and how now is a good time to buy. That book may or may not be relevant next week. I would just go to kitco.
Now a cookbook is another story. I might buy 10, 20 or 30 depending on what and the price.
As to searches, it may be I don't do generics example stamps but specific like limited edition Elvis Presley stamps. So Google may be guessing what information I need.
Many times it is a specific brand, item and model number. Those I usually get Walmart, Amazon, Home Depot or Harbor Freight first. Depending on who sells the product.
Oh 2 decades ago, it was yahoo not google. Google is only 18.
