Many U.S. states in the 21st century have passed online shopping sales tax laws designed to compel and other e-commerce retailers to collect state and local sales taxes from its customers. originally collected sales tax only from five states as of 2011, but as of April 2017, Amazon collects sales taxes from customers in all 45 states that have a state sales tax and in Washington, D.C.[194]
Hey Jan, glad it made you think. As you've found out it's not easy to rank #1 on Google especially when so few people will link to your product reviews. You need to tackle a specific niche with a focused target audience as a whole and build a community of like minded people around your site in order to make any significant income online sustainably and for the long term.
The Amazon sales rank (ASR) provides an indication of the popularity of a product sold on any Amazon locale. It is a relative indicator of popularity that is updated hourly. Effectively, it is a "best sellers list" for the millions of products stocked by Amazon.[146] While the ASR has no direct effect on the sales of a product, it is used by Amazon to determine which products to include in its bestsellers lists.[146] Products that appear in these lists enjoy additional exposure on the Amazon website and this may lead to an increase in sales. In particular, products that experience large jumps (up or down) in their sales ranks may be included within Amazon's lists of "movers and shakers"; such a listing provides additional exposure that might lead to an increase in sales.[147] For competitive reasons, Amazon does not release actual sales figures to the public. However, Amazon has now begun to release point of sale data via the Nielsen BookScan service to verified authors.[148] While the ASR has been the source of much speculation by publishers, manufacturers, and marketers, Amazon itself does not release the details of its sales rank calculation algorithm. Some companies have analyzed Amazon sales data to generate sales estimates based on the ASR,[149] though Amazon states:
According to an August 8, 2018 story in Bloomberg Businessweek, Amazon has about a 5 percent share of U.S. retail spending (excluding cars and car parts and visits to restaurants and bars), and a 43.5 share of American online spending in 2018. The forecast is for Amazon to own 49 percent of the total American online spending in 2018, with two-thirds of Amazon's revenue coming from the U.S.[53]

The company has also invested in a number of growing firms, both in the United States and Internationally.[76][77] In 2014, Amazon purchased top level domain .buy in auction for over $4 million.[78][79] The company has invested in brands that offer a wide range of services and products, including Engine Yard, a Ruby-on-Rails platform as a service company,[80] and Living Social, a local deal site.[81], Inc., doing business as Amazon (/ˈæməˌzɒn/), is an American electronic commerce, cloud computing, and consumer electronics company based in Seattle, Washington, that was founded by Jeff Bezos on July 5, 1994. The tech giant is the largest Internet retailer in the world as measured by revenue and market capitalization, and second largest after Alibaba Group in terms of total sales.[6] The website started as an online bookstore and later diversified to sell video downloads/streaming, MP3 downloads/streaming, audiobook downloads/streaming, software, video games, electronics, apparel, furniture, food, toys, and jewelry. The company also owns a publishing arm, Amazon Publishing, a film and television studio, Amazon Studios, produces consumer electronics lines including Kindle e-readers, Fire tablets, Fire TV, and Echo devices, and is the world's largest provider of cloud infrastructure services (IaaS and PaaS) through its AWS subsidiary.[7] Amazon also sells certain low-end products under its in-house brand AmazonBasics.