A program or computer code that affects or interferes with a computer’s operating system and gets spread to other computers accidentally or on purpose through email messages, downloads, infected CDs or network messages. See worm.

Building a Highly-targeted Opt in List: When Money Lies Beneath the Lists
Are you successful with your Internet business? Better yet, do you think you are successful with your online business? When most online entrepreneurs are asked with these questions, they often brush it off.