This is super interesting. Acephalous is trying to measure the speed of a meme -- an infectious idea -- as it spreads through the blogosphere. More importantly, he is trying to figure out whether they spread from the bottom up through low-traffic blogs or from the top-down through high traffic or both.

Here is his description:

What is the speed of meme? People write in general (typically truimphant) terms about how swiftly a single voice can travel from one side of the internet to the other and back again, but how often does that actually happen? Of those instances, how often is it organic?

Most memes, I'd wager, are only superficially organic: beginning small, they acquire minor prominence among low-traffic blogs before being picked up by a high-traffic one, from which many more low-traffic blogs snatch them. Contra blog-triumphal models of memetic bootstrapping, I believe most memes are--to borrow a term from Daniel Dennett's rebuttal of punctuated equilibrium--"skyhooked" into prominence by high-traffic blogs.

...

Here's what I need you to do:

1. Write a post linking to this one in which you explain the experiment. (All blogs count, be they TypePad, Blogger, MySpace, Facebook, &c.)
2. Ask your readers to do the same. Beg them. Relate sob stories about poor graduate students in desperate circumstances. Imply I'm one of them. (Do whatever you have to. If that fails, try whatever it takes.)
3. Ping Techorati.

While you do that, a script I've written will track this meme (via Technorati) across the internet in 10 minute intervals. It will record the number of links to this post, register their authority and create a database the very size of which will cause my poor processor to fall tumbling, in flames, down a steep cliff. (So be it. We all must makes sacrifices in the name of science.)

My fear is that I'll post this and no one will participate in my experiment. On the one hand, that'll be educational too, allowing me to talk about top-down vs. bottom-up dynamics, the ineffectiveness of compulsion and coercion on free-range bloggers, &c.

So here's begging. Follow the link above if you have a blog, and post about it with a link to his post. I am not certain how much this reflects the actual spread of a meme as it is somewhat artificial, but it will be very interesting to read his results.