[derefr]

Viruses are memes. Something that a cell hears, and then can't stop repeating.

[ajuc]

If the messages between cells are e-mail, then viruses are computer viruses. The analogy is almost perfect - it's information that uses security holes to cause the host to produce and send copies of it.

[stephengillie]

And eventually the computer explodes, spreading email spam everywhere. Oh, wait.

[divs1210]

Just realised 'viral meme' is a redundant phrase.