A piece of malicious code delivered via an executable attachment in email or over a computer network and which spreads to other computers by automatically sending itself to every email address on a recipient’s contact list or address book. See virus.

Building an Opt-In List, Building Relationships
If you aim for success, you must do everything within your means to achieve that. You just donít go on sitting there in your house complaining about not getting as much profit as you expect.