Spam may refer to any of the following:
1. Alternatively referred to as mass email marketing, UCE (unsolicited commercial e-mail) and bulk e-mail, spam (not the meat product) is slang commonly used to describe junk e-mail on the Internet. Spam is an e-mail sent to thousands and sometimes millions of people without prior approval, promoting a particular product, service, or a scam to get other people's money. The first spam e-mail was sent by Gary Thuerk on May 1, 1978, an employee at Digital who was advertising the new DECSYSTEM-2020, 2020T, 2060, and 2060T on ARPANET.
In some cases, replying to that e-mail indicates that your e-mail address is valid and your e-mail address may be sent to other spam lists, although this is prohibited in many countries. When receiving any e-mail that is spam, it is usually best to delete the e-mail. If you think the company is trustworthy or you are getting spam from a company you shared your e-mail with, it is usually safe to click the Unsubscribe or Remove links.
2. When talking in chat, forum, or a newsgroup, spam, also known as flooding, is the process of posting multiple lines of the same text two or more times. In a newsgroup, if a message is posted two or more times, this is also considered spam or a flood of messages.
3. Spam is also a general term used in any form of online communication to describe someone who is advertising a product or service.
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