Now watch where many waves meet and get extra-high for a short time-span.
I think Afroman did a song about this. Anyway, it seems you're the one who needs a bit of a reality check. Supposedly the people in the article acted as a group of 3 people. Since you claim anybody can act under the name of Anonymous, bam, there exists a grouping within Anonymous.
They are called computers simply because computation is the only significant job that has so far been given to them.