What is a meme?

suzanne [no longer around] said May 8, 2006, 1:50 AM:

 

A joke is a meme. The alphabet is a meme. Religion itself is a meme. A “meme” is simply ideas that get passed down from person to person.

The word (rhymes with “deem”) is related to the word “gene.” And like genes, as an idea is passed around, the “meme pool” gets bigger. The ideas that spring from the first idea may be different, but still in the same lineage.

In internet contexts, however, a meme is simply a short way of describing those quizzes you see everywhere, the MySpace bulletins you see posted fifty thousand times, that same forward about the king in Nigeria who needs your investment…

How about instead of sending useless crap around the internet, we start some memes with a higher intention?

I found this really insightful webpage: http://www.straightdope.com/columns/040213.html

It brings up an interesting point. “[Memes] remove the element of conscious choice, making the process purely mechanical.”

Is this what we're supposed to be breaking free from? The “groupthink” so to speak? But aren't memes helpful? They give us language, history, knowledge passed down from generation to generation…

To what degree are memes in control of us, and are we in control of memes?