Alan Freedman -- The Computer Language Company - Computer Desktop Encyclopedia
Computer Desktop Encyclopedia
Longest-Running Tech Reference on the Planet

A CDE Definition

You'll love The Computer Desktop Encyclopedia (CDE) for Tech Term of the Day (TTOD)



Pronounced "bacon," it is a newsletter, product offering or some other message sent via email that a user previously agreed to accept but rarely has the time to read. Bacn is not spam. See opt-in.


To accept some situation or condition ahead of time. For example, to opt-in to an email campaign means that you agree to receive periodic newsletters or information, which may include advertising from the publisher or third parties. An opt-in program implies that you can cancel the service, or "opt-out." A lot of spam is sent out under the guise that, at one point, the user did opt-in for the program, which may or may not be true. See spam and bacn.

Personal Use Only

Before/After Your Search Term
backup tapeBACnet
backup typesbacon
backup utilityBACP
backup windowBad command or file name
Backus-Naur formbad font
backward chainingbad naming
backward compatibilitybad pixel
backward compatiblebad sector
backwards compatiblebada

Terms By Topic
Click any of the following categories for a list of fundamental terms.
Computer Words You Gotta KnowSystem design
Job categoriesUnix/Linux
Interesting stuffPersonal computers
InternetIndustrial Automation/Process Control
Communications & networkingAssociations/Standards organizations
HistoryDesktop publishing
ProgrammingHealthcare IT
System design