As generally a small flat object, typically made from heavy paper or plastic card may refer to:
Non-physical analogues of physical cards:
More on [ Card ]

aMagicTrick.com - Shows you how to guess the card chosen by your friend.
Card Trick Central - Offers a glossary, magic note, and a sleight of hand index.
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Cardmagician.com - The first ever web-based email for magicians. Has magic tricks, articles, message boards, chat, discussion forums, search, and email.
Meta Description: [ CardMagician - magic site featuring web based email, magic search engine, articles, online magic tricks, and forums. ]
eCardTricks - Online card tricks that will amaze you.
Meta Description: [ Online card tricks that will amaze you! ]
Magic Meister - Three different interactive card tricks.
Meta Description: [ Online magic tricks and optical illusions - fun for kids and the whole family. ]
Sleights - One hand shuffle instructions with photographs.
The Card Collection - Playing cards and gadgets for magicians.
Meta Description: [ Type a brief description of your web site here. ]
The Card Trick! - Select a magic card and watch it disappear before your very eyes.
Meta Description: [ Advanced Card Trick, Learn to do Card Trick, Best Card Trick, Trick Card, Easy Magic Card Trick, Free Easy Card Trick, Card and Trick, Majic Card Trick, Card Trick Secret, Good Card Trick, Free Card Trick Online, Magic Card Trick Online ]
The Internet Lie Detector - A unique card trick in which the computer appears to be able tell if the spectator is telling the truth or lying.
Meta Description: [ A unique card trick in which the computer acts as a lie detector. ]
The Six-hour Memorized Deck - Answers to various questions from magicians on the memorized deck.
Meta Description: [ This section answers various questions from magicians on the memorized deck. The Six-hour Memorized Deck - a new memorization method. ]
True Magic - Cool Magic. You won't believe your eyes. ENTER or you will suffer. This is the site every one is talking about.