Smart answer:

Your search for What is spam returned the following results:

a sleazy advertising gimmick or a phishing attempt

Spam is a sleazy advertising gimmick or a phishing attempt.

a brand of canned mystery meat made by Hormel Foods Corporation

SPAM is a brand of canned mystery meat made by Hormel Foods Corporation.

Source:

an unfortunate reality of life

Spam is an unfortunate reality of life when life comes to email usage.

Source:

unsolicited commercial email, junk mail, or bulk mail that hasn’t been requested by the recipient

Spam is unsolicited commercial email, junk mail or bulk mail that has not been requested by the recipient.

Source:

just a term for unsolicited bulk email messages

“Spam” is just a term for unsolicited bulk email messages.

the most obnoxious form of advertising

Spam is the most obnoxious form of advertising, that most people are actively avoiding.

Source:

a significant problem on the Internet

Spam (unsolicited and unwanted email) is a significant problem on the internet.

a big problem on the internet

Spam is a big problem on the Internet and reflects badly on online marketing in general.

Source:

a canned meat food made by the Hormel Foods Corporation

Spam is a canned meat food made by the Hormel Foods Corporation.

Source:

any unsolicited commercial or junk email

In the case of bulk email marketing, SPAM is any unsolicited commercial or junk email.

Source: