Whois & Analysis for sellerboard.com

Electronic mail, or email, is a method of exchanging digital messages between people using digital devices such as computers and mobile phones.

Email first entered substantial use in the 1960s and by the mid-1970s had taken the form now recognized as email.

Email operates across computer networks, which today is primarily the Internet.

Some early email systems required the author and the recipient to both be online at the same time, in common with instant messaging.

Today's email systems are based on a store-and-forward model.

Email servers accept, forward, deliver, and store messages.

Neither the users nor their computers are required to be online simultaneously; they need to connect only briefly, typically to a mail server or a webmail interface, for as long as it takes to send or receive messages.

Amazon.com (or), also called Amazon, is an American electronic commerce and cloud computing company that was founded on July 5, 1994, by Jeff Bezos and is based in Seattle, Washington.

It is the largest Internet-based retailer in the world by total sales and market capitalization.

Amazon.com started as an online bookstore, later diversifying to sell DVDs, Blu-rays, CDs, video downloads/streaming, MP3 downloads/streaming, audiobook downloads/streaming, software, video games, electronics, apparel, furniture, food, toys, and jewelry.

The company also produces consumer electronics—notably, Kindle e-readers, Fire tablets, Fire TV, and Echo—and is the world's largest provider of cloud infrastructure services (IaaS and PaaS).

Amazon also sells certain low-end products like USB cables under its in-house brand AmazonBasics.

Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop.

The system can then be said to feed back into itself.

The notion of cause-and-effect has to be handled carefully when applied to feedback systems:

Advertising is an audio or visual form of marketing communication that employs an openly sponsored, nonpersonal message to promote or sell a product, service or idea.

Sponsors of advertising are often businesses who wish to promote their products or services.

Advertising is differentiated from public relations in that an advertiser usually pays for and has control over the message.

It is differentiated from personal selling in that the message is nonpersonal, i.e., not directed to a particular individual.

Pay-per-click (PPC), also known as cost per click (CPC), is an internet advertising model used to direct traffic to websites, in which an advertiser pays a publisher (typically a website owner or a network of websites) when the ad is clicked.