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E

E-card (electronic card)

A digital greetings card or postcard created and sent to someone via the Web.

E-commerce

Buying and selling goods electronically, usually over the Internet.

Emoticon

The use of icons or text to portray mood or facial expression, e.g. smile when happy and sad when sad.

Encryption

For security, data is translated into a secret code according to a set of rules in a special 'key'. To convert the data back into plain text, the receiver must also have the key.

Etiquette

A set of rules that people try to abide by out of respect for other people around them.