Webopedia on Google+Webopedia on TwitterWebopedia on FacebookTech Bytes Blog
Main » TERM » C »


In e-mail terminology, co-registration refers to arrangements between companies to collect user information. Usually this would be a separate check-box on a Web signup form where the user can opt-in to receive messages from a third party. For example, a magazine running a contest may include a check box for registrants to accept e-mail future announcements from them, and also from the prize sponsor of the contest. Co-registration usually adds the subscriber, provided they check the boxes to give permission, to two or more opt-in mailing lists.

See "How Affiliate Marketing Works" in the "Did You Know..." section of Webopedia.

8 Agenda Apps to Help Students Stay Organized

Webopedia's student apps roundup will help you to better organize your class schedule and stay on top of assignments and homework. Read More »

List of Free Shorten URL Services

A URL shortener is a way to make a long Web address shorter. Try this list of free services. Read More »

Top 10 Tech Terms of 2015

The most popular Webopedia definitions of 2015. Read More »

Java Basics, Part 1

Java is a high-level programming language. This guide describes the basics of Java, providing an overview of syntax, variables, data types and... Read More »

Java Basics, Part 2

This second Study Guide describes the basics of Java, providing an overview of operators, modifiers and control Structures. Read More »

The 7 Layers of the OSI Model

The Open System Interconnection (OSI) model defines a networking framework to implement protocols in seven layers. Use this handy guide to compare... Read More »